Overview
Week 43 brings fresh changes as your baby grows. About 9–10 months is a season of tiny wins — a new sound, a longer stretch of sleep, or a smile that melts the exhaustion.
Older baby · Weeks 27–52 · About 9–10 months
Your 43-Week-Old Baby
At 43 weeks (about 9–10 months), your baby is learning every day. Here is what many families notice.
3 min readmilestonessleepfeeding
Medically reviewed by Dr. Prachi, Physician · Last reviewed July 9, 2026
Baby Development
This week, typical development may include: Running attempts, short phrases, pretend play expanding. Every baby follows their own timeline — comparison is the thief of joy.
Milestones
Running attempts, short phrases, pretend play expanding.
Sleep
Sleep patterns vary widely. Consistent bedtime routines help even when schedules shift.
Feeding
Toddler appetites wobble day to day. Regular meal and snack times with no pressure work best.
Health & Wellness
Regular well-baby checks, safe sleep practices, and childproofing stay important as mobility grows.
Partner & Family Support
Share night feeds, nappy changes, or a short walk so the primary caregiver can rest.
When to Call the Doctor
Call your paediatrician for fever in a young baby, fewer wet nappies, breathing difficulty, persistent vomiting, or if something feels wrong to you.
Frequently Asked Questions
Sleep varies enormously in the first year. Short cycles, cluster feeding nights, and growth spurts all shake things up. Track overall mood, feeding, and wet nappies — and ask your doctor if you are worried.
ParentVibes Tip
Baby-proof ahead of mobility — outlets, corners, and loose items.
Baby essentials & tools
Handy guides and free trackers for this stage.
ParentVibes offers general information, not medical advice. Always follow your paediatrician.