The Mobility Preparation Phase
Months 4 to 6 — new skills, new shifts, and a baby on the move (almost).
By The Millie's Team · Parenting Notes
Things are about to get more interesting
Your baby is gearing up. Rolling, reaching, pushing up, eyeing the dog — they're getting ready to move. This phase is a busy one for their brain and body, and you'll probably see that ripple through naps, feeds, and moods.
It's also incredibly fun. Their personality is showing up loud and clear.
What's happening for your baby
This is a phase of physical groundwork. Even if your baby isn't crawling yet, they're building all the pieces. Lots of effort, lots of energy, lots of growing.
Things you might notice:
- Rolling (front to back, then back to front)
- Pushing up on arms during tummy time
- Reaching, grabbing, putting everything in their mouth
- Increased interest in food (hello, solids around the corner)
- Naps and feeds shifting again as their body changes
The "why is everything changing again?" feeling
Just when you'd settled into a rhythm — wake windows lengthen, naps reshuffle, night sleep wobbles. This is normal. Your baby's development is genuinely faster than your routine can keep up with.
How Millies App helps
The app notices the shifts before you might. When wake windows are stretching out, when a nap is quietly dropping away, when feeds are spacing out — Millies surfaces those changes calmly, so you can lean into the new rhythm instead of fighting the old one.
A gentle reminder
If your baby is more wriggly, more distractible, more "on" — that's exactly right. They're not regressing. They're prepping for the next big thing.