If you've ever found yourself on your phone at 2am Googling "is it normal for a 4-month-old to not be rolling yet," firstly — you are not alone. Not even a little bit. And secondly, you've landed in the right place.
As someone with a background in early childhood education, and as a mum, I know how quickly the milestone conversation can go from genuinely helpful to quietly anxiety-inducing. So let's talk about what developmental milestones actually are, why they matter, and — most importantly — why your baby's timeline is their own.
What are developmental milestones, really?
Developmental milestones are simply the skills and abilities that most babies acquire within a general age range. They're a guide, not a rulebook. As Raising Children Network puts it, development happens in a similar order in most babies, but skills might appear at different ages — and differences between babies are usually nothing to worry about.1
Milestones are grouped into four broad areas:
- Gross motor— big muscle movements like lifting the head, rolling, sitting, crawling, and eventually walking.
- Fine motor— smaller, more precise movements like grasping, reaching, and bringing objects to the mouth.
- Social and emotional— smiling, making eye contact, responding to familiar faces, and showing feelings.
- Communication and language— cooing, babbling, responding to sound, and beginning to understand words.
A rough map of the first year
Here's a rough guide to what you might see — keeping in mind that your baby might do some things earlier, some things later, and possibly skip certain stages altogether (like crawling — totally normal).2
Lifts head during tummy time, startles at sounds, focuses on faces, begins to smile socially, coos and makes sounds.
Rolls from tummy to back, reaches for objects, laughs, recognises familiar people, tracks movement with eyes.
Sits with support, begins to sit independently, transfers objects between hands, babbles consonant sounds, responds to name.
Pulls to stand, may begin to walk, uses pincer grip, understands simple words like "no" and "bye-bye," may say first word.
The NSW Department of Communities and Justice reminds parents: resist the urge to compare your child to others — it only puts unnecessary pressure on you both. Some babies will miss certain milestones altogether, like crawling, and that's completely okay.3
When should you check in?
This is what your Maternal and Child Health Nurse visits are for — and they are such a valuable resource. Your MCHN is trained specifically to look at development in context, and they're not there to alarm you. They're there to support you and your baby as a team.
If you notice things like your baby not making eye contact, not responding to sounds, or showing very little interest in people or play by around 3–4 months, it's always worth raising — not because something is necessarily wrong, but because early support, if needed, makes a real difference.
HealthDirect Australia echoes this: early intervention can make a significant difference, which is why regular checks with your doctor or child health nurse are so important, even when things seem fine.4
The one thing I want you to take from this
You know your baby better than any chart or checklist ever will. Milestones are there to give you a framework, not to make you feel behind. The fact that you're paying attention, that you're curious, that you're here reading about this — that already tells me everything about the kind of parent you are.
Keep following your instincts. Keep talking to your baby. Keep showing up. The rest unfolds in its own beautiful, completely individual time.
Juliet — Clover Duck
1 Raising Children Network, "Baby Development and Developmental Milestones" — raisingchildren.net.au
2 Pregnancy, Birth and Baby, "Your Baby's Growth and Development – First 12 Months" — pregnancybirthbaby.org.au
3 NSW Department of Communities and Justice, "Baby Developmental Milestones" — dcj.nsw.gov.au
4 HealthDirect Australia, "Developmental Milestones in Babies and Children" — healthdirect.gov.au
