Belly sleeper question..

Nynke • Dutch, teacher & mom of Teun 30-3-19

So these past few days my little guy rolls over in his bed from back to belly to sleep. The first time this happend it totally freaked me out to find him like this. But he seems to lay his head down safely to the side. The pediatric nurse just adviced us to turn him around if we find him on is belly. Did you get the same advice for your belly sleepers? I kinda feel reluctant to do this because it will wake him up and he will most likely roll back right away. He sleeps on a firm flat surface in an empty bed.