Baby week 20 of 52 · Month 5 · Body · feeding · care
Week 20: Your 20-Week-Old Baby
Bears weight on legs when held upright; loves being propped to sit.
Wake window
1.5 hours to 2.5 hours
Total sleep
14–15 hrs / 24h
Naps
3–4 per day
Feeding
6–7 milk feeds
Sleep at 20 weeks
At 20 weeks, most babies are awake for 1.5 hours to 2.5 hours at a stretch and sleep 14–15 hours across the full day, over 3–4 naps plus nighttime sleep. The first wake window of the day is usually the shortest and the last one before bed the longest — the wake-window calculator spreads them out for you. Total-sleep ranges on this page follow the AASM consensus endorsed by the AAP for 4–12 months and National Sleep Foundation ranges for the newborn weeks; newborn pages note where AAP/AASM set no fixed 0–3 month target.
Milestones to watch for
- Sits with support
- Babbling chains ('ba-ba-ba') begin
Care and feeding
Bears weight on legs when held upright; loves being propped to sit. Feeding rhythm this week: 6–7 milk feeds a day is typical — the pattern across the week matters more than any single day.
Week 20 questions
How long should a 20-week-old be awake between naps?
Most 20-week-olds handle about 1.5 hours to 2.5 hours awake at a time. Watch for sleepy cues — staring off, jerky movements, fussing — and start the nap routine a few minutes before the top of the window.
How much sleep does a 20-week-old need in 24 hours?
Typical total sleep at 20 weeks is about 14–15 hours in 24 hours, usually split into 3–4 naps plus nighttime sleep. A day or two outside that range is common and usually not a concern on its own.
What milestones might I see at 20 weeks?
Around 20 weeks many babies begin to: sits with support; babbling chains ('ba-ba-ba') begin. Milestones are ranges, not deadlines — babies reach them across a span of weeks. Mention any concern to your pediatrician at the next visit.
Keep going: tools · essentials for this stage · guides
Educational information only — not medical advice. Every pregnancy and every baby develops on their own timeline. If you have any concern, talk to your obstetric provider or your baby's pediatrician.