In the first weeks, a newborn’s sleep has no shape at all — and that’s exactly normal. They sleep about 14 to 17 hours out of every 24, but in scraps of two to four hours, scattered right across day and night. There’s no rhythm to hold onto yet, because the body clock that tells day from night hasn’t switched on.
How much, and for how long at a stretch
Total sleep barely changes month to month at first; what changes is how it’s organised. The numbers worth knowing are the wake windows — how long your baby can comfortably stay awake between sleeps, feed and change included.
| Age | Wake window | Total sleep / 24h |
|---|---|---|
| 0–4 weeks | ~30–60 min | 14–17 h |
| 1–2 months | ~60–90 min | 14–16 h |
| 2–3 months | ~75–120 min | 14–16 h |
| 3–4 months | ~90 min–2 h | 13–15 h |
These are gentle guides, not targets. A newborn who’s been awake for 45 minutes is often already tired — which is why the clock matters less than the cues.
Read the cues, not the clock
Babies signal sleepiness before they melt down. Catching the early signs makes settling far easier:
- Yawning, slowing down, glazed or “faraway” eyes
- Turning the face away from light or activity
- Rubbing eyes, pulling ears, getting jerky or fussy
Once a baby is overtired, the stress hormones make it harder to sleep — so when you see the first cues, head for the nap.
Day-night confusion
Many newborns are wide awake at 3am and sleepy all afternoon. This sorts itself out as the circadian rhythm develops over the first 8 to 12 weeks. You can nudge it along: bright light and gentle activity during daytime feeds, and keeping night feeds calm, dim and quiet — no playing, minimal talk.
Safe sleep, every sleep. Always put your baby down on their back, on a firm, flat surface, in their own clear cot or crib — no pillows, loose blankets, bumpers or soft toys. Room-sharing without bed-sharing is recommended, and keep the room comfortably cool to avoid overheating. Ask your pediatrician or health visitor about the safe-sleep guidance where you live.
When to check with a professional
Speak to your pediatrician, family doctor, or health visitor if your baby is very hard to wake for feeds, consistently sleeps far more or far less than the ranges above, is unusually floppy, or you’re worried about their breathing during sleep.
This is general information, not medical advice. Every baby is different — if something about your baby’s sleep worries you, ask the people who know their history.
Wake windows revolve around feeds, so sleep and how often your baby feeds really are one rhythm. In these blurry early weeks, jotting down when sleep starts and ends is what makes the pattern visible — and tells you, at a glance, how long they’ve actually been awake.