NewNestly Logo
Tell us your stage for picks that fitYour stage:Trying to conceiveYour stage:PregnancyYour stage:NewbornYour stage:InfantYour stage:Toddler
Choose stageChange
Your stages

Pick all that apply (Trying and Pregnancy are one or the other). The newest is shown; switch any time.

Remembered in this browser only. Links you open stay exactly as they are.

Personalization settings

4 months

Your 4-month-old: what to plan this month

Clothes in the next size up and a first look at baby-proofing.

Every baby develops at their own pace. These pages cover planning and play — for questions about growth or development, talk to your pediatrician.

Babies are awake for longer now and starting to grab and roll. A good month to size up clothes and look around your home from floor level.

What to plan this month

  • Check clothing sizesOur size predictor estimates the next size by brand.
  • Walk through each room with a baby-proofing checklist
  • Plan floor play time each dayA play mat and a few safe toys are enough.
  • Book any travel for the coming months early

Play ideas for this month

More play ideas

Picnic tummy time

  • 0–9 months
  • 15 min
  • Outdoors
  • Low mess

Tummy time in the fresh air on a picnic blanket.

  • Moving
  • Senses

You’ll need

  • Blanket
How to play
  1. Spread a blanket in the shade.
  2. Place your baby on their tummy for short stretches.
  3. Lie down facing them and chat.

Play safely: Stay with your baby, keep them shaded and out of direct sun.

Story time snuggle

  • 0–36 months
  • 10 min
  • Indoors
  • Low mess

Share a board book — chewing it counts too.

  • Words & sounds

You’ll need

  • Board books
How to play
  1. Snuggle up with a board book.
  2. Point to pictures and name them.
  3. Let your baby turn the pages, even if it’s out of order.

Narrated walk

  • 0–36 months
  • 30 min
  • Outdoors
  • Low mess

Talk through everything you see on a walk around the block.

  • Words & sounds
  • Senses

You’ll need

Nothing but you

How to play
  1. Head out with the stroller or carrier.
  2. Name what you see: trees, dogs, cars, clouds.
  3. Pause to let them look, touch a leaf or listen to a bird.

Printables for this month