When your child’s sleep tank is drained because of an illness or holiday or other special event, how many days of recovery sleep does it take to refill the tank? The answer depends on how well your child was sleeping before the event, the severity of the sleep loss per night, and the number of days of insufficient sleep. Here are some facts that illustrate why recovery may take longer than you think. In 2021, researchers in Australia studied adolescents, aged 15-17 years, all were good sleepers with more than 8 hours of sleep per night. They were experimentally studied in a sleep laboratory for 10 nights and divided into 3 groups:
Nights 1 and 2 (Baseline):
Nights 3-8:
Nights 9 and 10 (Recovery):
Here are the results:
Group 1.
Group 2.
Group 3.
Conclusions
Sleep Banking (Blog Post 63) may help recover from sleep loss.
(To be continued.) To stay updated with my latest baby and child sleep blog posts, be sure to subscribe today.
Hi Dr. Weissbluth,
We are in need of help. Our son just turned 4 in October 2025. We are faithful follower of your sleeping method since he’s about 6 weeks old. With some minor rocky challenges dropping from 2 to 1 nap, he is consistently an excellent sleeper (night uninterrupted for 11-12 hours, plus 1.5-2 hours nap during the day).
We noticed since the fall that he’s slowly dropping naps. He is now down to napping only 1-2 times aweek, or slightly more if he’s recovering from sleep/illness. Since the first week of December, he was ill with intermittent upper respiratory virus (including an episode of RSV) When he is congested and coughing non stop it was very difficult to sleep at night. He finally fully recovered about two weeks ago.
We are fully aware he’s been over tired and likely a bit overstimulated over the holiday and have been encouraging early bedtime and encouraging “quite hours” at nap.
Since about a month ago, he’s been waking up early (sometimes 2-3am), waking up multiple times, and now having really prominent bedtime battles. We do our best to put him down at least 10-20 minutes earlier than his usual bed time (used to be 6:30-7) now 6/6:15. Typical excuses ranges from “I forgot to put my book back”, to “need to potty for the 4/5 time.”, to crying out “I am lonely”. We tried implementing your sleep rule method which worked in the fall (for staying in the room until 6am), but now he is constantly breaking the rule (and hence losing more privileges/taking longer to earn privileges back). It seems to have no affect for him. Tonight we silently walked him back to bed twice and he balled for another 10 minutes before being finally quite (an hour after initial put down).
The last 2-3 days he seems to be sleeping longer and is able to stay put in his bed until 5/530am before he calls out for pee. But the bedtime battle is so frustrating. Especially given that up to December he was such a dream sleeper (easy put down, sleeps through whole night).
Our questions are: it’s been 4 weeks of this ongoing struggle, should we go back to “cry it out method”? He is cheeful during the day, but has some increased anxiety to crowds/noises more than baseline. If he does not appear or express being fatigued, should we still try ultra early bedtime “i.e 530pm”, if so, for how long?
Thank you kindly for your assistance.
Thank you for reaching out and for your detailed description. You have been excellent parents — your son’s sleep history through age 4 demonstrates that clearly. What you’re experiencing now is temporary and fixable. Here is what I see and what I recommend.
What happened:
A month of illness (RSV, upper respiratory infections, holiday overstimulation) disrupted your son’s sleep at a developmental moment when he was naturally dropping naps. That combination created cumulative sleep debt that has not yet been repaid. The bedtime battles, early wakings, and multiple night wakings are all signs that he is overtired — not undertired. His cheerful daytime mood and lack of expressed fatigue do not mean he is getting enough sleep. Many overtired children appear happy during the day because the fatigue is masked by activity and stimulation. The true indicator is his behavior between 4–5 pm when alone with toys (no screens, no parent involvement). If you see any drowsy signs then — rubbing eyes, decreased activity, zoning out — he is still carrying sleep debt.
The increased anxiety to crowds and noises is also consistent with cumulative sleepiness. Overtired children become more reactive and less able to regulate their responses to stimulation.
What to do:
For the next 5–7 days, implement an ultra-early bedtime: lights out and you are leaving the room at 5:30 pm. Not 6:00 pm, not 5:45 pm — 5:30 pm. This is a temporary reset, not a permanent schedule. Your goal is to allow him to catch up on the sleep debt accumulated over the past month.
The bedtime battles will likely worsen for 1–2 nights before they improve. This is normal. He is overtired, which creates pre-sleep arousal that makes falling asleep harder, not easier. Stick with the plan. Silent returns to bed, no negotiation, no conversation. Sleep Rules remain in effect — he loses privileges for breaking them — but the primary intervention right now is time: more sleep at the front end of the night.
Do not offer naps or quiet hours during the day. At his age (just turned 4), napping 1–2 times per week is completely normal and healthy. Most 4-year-olds are done with naps. Forcing quiet time when he is not drowsy creates frustration for both of you and does not address the real problem, which is nighttime sleep debt.
Should you go back to extinction?
Yes. Use Sleep Rules with Silent Return to Sleep if he leaves his room. Stay consistent.
If after 7 days of the 5:30 pm bedtime you are still seeing bedtime battles lasting more than 20 minutes and multiple night wakings, write back and we will reassess. But I expect significant improvement within 4–5 days.
How long to continue the ultra-early bedtime:
Continue the 5:30 pm bedtime until you see these signs:
Bedtime battles resolve (falls asleep within 10–15 minutes)
Night wakings stop or reduce to one brief waking
Morning wake-up stabilizes at 6:00 am or later
No drowsy signs between 4–5 pm
Once you see consistent improvement for 3–4 nights, you can begin moving bedtime later in 10-minute increments every 3 nights, watching carefully for any return of bedtime resistance or night wakings. You will likely settle somewhere around 6:00–6:30 pm as his regular bedtime now that he is no longer napping.
Final thought:
You have done everything right. The illness was unavoidable. The holiday disruption was unavoidable. What matters now is that you act decisively to restore his sleep. The 5:30 pm bedtime will feel extreme, but it works. Trust the process. Your son’s brain needs the extra sleep to recover, and once it gets it, the cheerful, easy sleeper you knew in December will return.
Keep a written log of bedtimes, fall-asleep times, night wakings, and morning wake-up times for the next week. Send me an update after 7 days and we will adjust if needed.
You are doing excellent work.
Dr. Weissbluth
Thank you, we will absolutely comply! Thinking back I did see a lot more of him layind down on the floor quitely in the afternoon around 4pm, as well as intermittent complain of “I’m slowing down because I am tired” around 6pm, the latter probably means we’ve already missed the drowsy signs and he is entering over-tired phase. This advise about quite time is really helpful, thank you! Will write back and let you know how everything fans out!
Hi Dr Weissbluth, we followed your recommendations above and have been mostly successful! Today is D7 of recovery. Here’s where things are at:
D1: down at 5:31, cry/protest at 535-540. Up next morning at 540am. Noted pm fatigue starting at noon; yawning at bedtime.
D2: down at 527; protest at 540, 545, quite at 550. Up at 545am. Noted pm fatigue starting at 2-3pm
D3: down at 522; up at 1am “bad dream”, quite return. Up at 6am . Noted pm fatigue around 4pm
D4: down at 520, up at 515am. Noted pm fatigue around 4pm.
D5: down at 518pm, up at 415, 445, then 6am. Hard to gauge pm fatigue as he was out visiting a museum with my husband in the afternoon until dinner time.
D6: down at 530pm, up at 515am. No significant pm fatigue.
Not sure what happened on D-5. We are inclined to do one more 530pm day before adjusting his bedtime. Since we are approaching day light savings time, should we continue without changing as the clock naturally pushes forward anyhow?
Thank you for your support!
You have done excellent work. The seven-day log tells a clear and encouraging story.
Looking at the arc: afternoon fatigue starting at noon on Day 1, shifting to 2–3 pm on Day 2, then settling around 4 pm on Days 3 and 4, and essentially absent by Day 6. That is precisely the trajectory you want to see — the sleep debt is being repaid from the front end, and the nervous system is calming down. Morning wake times also stabilized across the week, and Day 6 showed no significant afternoon fatigue and a single morning waking — a meaningful improvement from where you started.
Day 5 is straightforward. The museum outing masked the afternoon fatigue signs and provided enough stimulation to push him past his drowsy period. The two early wakings that night reflect that he went into that night slightly more depleted. Day 6 recovered well, confirming he absorbed the disruption and bounced back — exactly what a mostly rested child does.
Your instinct to hold one more day at 5:30 before adjusting is correct. Do that.
On daylight saving time: keep the 5:30 pm bedtime unchanged for now, even after the clocks change. Here is why. Circadian rhythms are driven by light and dark cues, but social cues matter too — when you eat together, when he has his bath, when the household winds down. Those social anchors do not shift when the clocks change. A 6:00 pm dinner is still happening at the same biological time in the evening regardless of what the clock reads. Because he is still repaying sleep debt and because your daily rhythms will continue as before, maintaining the 5:30 pm bedtime on the new clock is the right call.
The signal to move the bedtime a little later will come from two things: the absence of afternoon fatigue signs, and a longer time between being put down and actually falling asleep. When he is no longer showing fatigue signs in the afternoon and is taking noticeably longer to fall asleep at 5:30, that tells you he has repaid his debt and is ready for a slightly later bedtime. At that point, move it in small increments — 10 to 15 minutes at a time — watching carefully for any return of resistance or afternoon fatigue before moving it again.
You have handled this beautifully. The cheerful, easy sleeper from December is almost back.
Is this acceptable?
— Marc Weissbluth, M.D.
Yes absolutely! Thank you for helping us through a big hurdle! Even more than concrete plans, your words always remind us to slow down and pay more attention to our child.
What wonderful news — thank you for sharing this update. Hearing that your child is sleeping better means the whole family is doing better, and that is exactly what this work is for.
My sincere goal is to raise awareness of accurate, research-based information about children’s sleep, so that more families can find their way to restful nights and calmer days. You are now on the right path, and I am confident your child’s sleep will continue to improve.
To help encourage other parents who may be struggling with the same challenges you faced, would you consider writing a narrative account of your sleep journey and posting it here as a comment? Parents often find it most meaningful to hear from other parents — what the problem looked like, what you tried, what worked, and how your family came through it. If you are willing, please include the role the father played, as father involvement is one of the most important and underappreciated factors in helping children sleep well.
If you feel comfortable doing so, an honest Amazon book review would also be a tremendous help to families who are searching for guidance and trying to decide whether this approach is right for them.
I wish you and your child sweet dreams.
Yes, I can do that. I will upload a file once I type this up. I left an amazon review for your book 2-3 yeaers ago letting people know how pleased we are with your method. I always find opportunities to share what I learned from you with other parents. To be honest, many either don’t want to learn, don’t have the time to learn, or simply just wish to continue what they are doing even if it is obviously wrong. I can’t count how many times we’ve been burned trying to encourage others to do the right things. Since my husband and I are fully convinced that this really is the best for children, we keep on trying. Hopefully one day we will be able to make a difference the way you’ve made a difference in our lives.
Thank you.