When did your preemie catch up?

My 33 weeker is now 7 months old and I notice that she’s still somewhat behind with certain milestones (sitting, rolling both ways, etc.). Now my question is: at what age do preemies usually catch up to the point where there isn’t a big difference between them and other kids developmental wise ? via /r/NICUParents https://ift.tt/7KwUVdA