I'm a first time mom so this might be a stupid post. Please no judgement.

Our daughter is four months old and she just learned to roll from back to tummy a few days ago. She does it every chance she gets. 😍

I read that babies need to sleep on their back but she rolls on her tummy in the night. Is there any way I could keep her from doing that. It makes me very nervous. She's not as good at rolling from tummy to back. I'm probably just worrying for nothing. What do you think?