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Your baby at 64 weeks: fifteen months

Medically-informed · Sources: CDC · Updated June 2026

The 15-month checkup closes this guide's arc: from reflexes to a walking, gesturing, opinionated small person — and your library here stays with you.

What’s happening

The 15-month picture

Commonly: walking (or nearly), several words plus rich gestures, following simple directions, imitating chores, stacking, self-feeding chunks.

The visit

Growth, development screen, commonly a vaccine installment; bring the first-words list, sleep questions and any Worth-watching leftovers.

What continues

The tracker, stats, Ask and your history keep working past the guide — the weekly chapters end here, the companion doesn't.

What to do

  • Bring logs, words list and doctor-notes to the 15-month visit
  • Ask about the 2→1 nap timing for YOUR kid's pattern
  • Celebrate: 64 weeks of showing up, logged and lived

When to check in

The standing rules survive the guide: fever thresholds, skill regressions and your gut feeling always warrant the call.

This is exactly what FirstWeeks shows you — matched to your baby

Week 64 guidance, skills to watch, and answers that know your baby’s age and log.