The Mobility Preparation Phase

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

On rolling, and what to expect

Rolling tends to show up somewhere between four and six months, usually front-to-back first and then, a few weeks later, back-to-front. It's the pay-off for all those tummy time minutes you've been clocking — the core and neck strength have quietly been building, and one day it just clicks. Some babies do it gradually over a week or two. Others surprise themselves spectacularly the first time, look around as if to say "who did that," and then promptly cry. Both are completely normal.

The trickier bit, for most parents, is when rolling starts to crash into sleep. Your baby rolls in the cot, ends up on their tummy, can't quite work out how to roll back, and yells about it at 3am. This is one of the classic disruptions of this phase, and it's almost always temporary — most babies figure out the return journey within a week or two of practice. Give them lots of room to practise rolling both ways during the day on a safe floor space, and resist the urge to keep flipping them back immediately. Once they've nailed it both ways, the cot drama tends to quietly resolve itself.

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 App 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.