Let’s be honest: Newborn babies are adorable, but during the early weeks, they just lie around a lot. That’s why parents anxiously wait for the developmental milestone of rolling over, which symbolizes that their little one is becoming mobile, an important step towards becoming more independent. (Next thing you know they’ll be wanting the car keys.) Here’s an overview of when babies start to roll over, how you can help them get there and what to do if they haven’t yet mastered the big flip.