Belly rolling/sleeping

Alright so my daughter turned four months old last week. She’s been rolling onto her belly pretty consistently from earlier this month, but she’s started doing it in her sleep now too. At first she hated it and would wake up, now she doesn’t.

My question is, how do I sleep peacefully knowing she can roll onto her stomach? At naps it’s fine cause I can check her. But at night I can’t possibly keep getting up to check.

What do you do to get some sleep?