My daughter was only 4 weeks early.
She sat up around 5 months, didn't stand until 10 months, and walked right ater her first birthday.
Her pedi says she's right on track with everything currently, but her size. She'll be 14 months on the 20th, and she's 17 lbs and 29 inches long. She's in the lower percentile for everything. She's always been "small".
My daughter has rolled a few times but nothing since Valentines day. When she on her belly she has mastered scooting around in a circle. My first daughter who wasn't a preemie did everything early & I'm constantly reminding myself everybody baby does things at different times.
Once last question when did your little ones start to laugh?