Wake windows by age chart
Newborns can stay awake for only 35–60 minutes. Wake windows grow to about 2–2.5 hours by 6 months, 3–4 hours by 12 months and 5–6 hours by age 2.
| Age | Wake window | Naps per day | Total sleep / 24 h |
|---|---|---|---|
| 0–1 month | 35 min – 1 h | 4–7+ | 14–17 h |
| 1–2 months | 1 h – 1 h 30 min | 4–6 | 14–17 h |
| 3–4 months | 1 h 15 min – 2 h | 3–4 | 12–16 h |
| 5–6 months | 2 h – 2 h 30 min | 3 | 12–16 h |
| 7–9 months | 2 h 30 min – 3 h 30 min | 2–3 | 12–16 h |
| 10–12 months | 3 h – 4 h | 2 | 12–16 h |
| 13–18 months | 4 h – 5 h 30 min | 1–2 | 11–14 h |
| 19–24 months | 5 h – 6 h | 1 | 11–14 h |
| 2–3 years | 5 h 30 min – 7 h | 0–1 | 11–14 h |
Wake windows usually get a little longer as the day goes on, with the longest one just before bedtime. Use the shorter end of the range in the morning and the longer end in the evening.
Sleepy cues and overtired signs
| Early sleepy cues — start winding down | Overtired signs — put baby down now |
|---|---|
| Staring into space, looking away | Crying that’s hard to settle |
| Slower movements, quieter | Arching back, clenched fists |
| Yawning | Rubbing eyes or pulling ears hard |
| Red eyebrows or eyelids | Sudden burst of hyper energy (older babies) |
How to use wake windows
- Note when your baby wakes up — from the morning wake-up or the end of a nap.
- Start the nap routine 10–15 minutes before the window ends: dim lights, diaper change, sleep sack, a short song.
- Watch your baby, not just the clock. If you see early sleepy cues sooner, go with them.
- Adjust in small steps. Change the window by 10–15 minutes at a time and give it a few days.
Want a whole-day plan? The baby sleep schedule by age builds a full sample day from your baby’s wake-up time.
Nap transitions
- 4 → 3 naps: around 4–5 months
- 3 → 2 naps: around 6–8 months, when the last nap gets hard to fit in
- 2 → 1 nap: around 13–18 months; expect a few weeks of an earlier bedtime
- Dropping the last nap: usually between 3 and 5 years
Whatever the schedule, always place your baby on their back to sleep on a firm, flat surface with no loose bedding — the AAP’s safe sleep basics.
Frequently asked questions
What is a wake window?
A wake window is the stretch of time a baby can comfortably stay awake between sleeps — from the moment they wake up until they fall asleep again. It starts at under an hour for newborns and grows to 5–6 hours by age 2.
Do wake windows include feeding time?
Yes. The wake window runs from when your baby wakes until they are asleep again, so it includes feeds, diaper changes, play and the time it takes to settle.
What happens if a wake window is too long?
An overtired baby often gets fussy, rubs their eyes, arches or cries, and may take longer to fall asleep, nap for a shorter time or wake more at night. If that happens, try putting your baby down 15–20 minutes earlier.
What if my baby won’t nap at the end of the wake window?
They may not be tired enough yet. Short naps and long time spent settling can mean the wake window is too short — try stretching it by 10–15 minutes over a few days.
Are wake windows backed by research?
Wake windows are a practical rule of thumb used by pediatricians and sleep specialists rather than a formal medical standard. Total daily sleep recommendations come from the AASM and AAP; wake windows help you spread that sleep across the day.