Newborn rolls to his side while sleeping?

Hey mammas :) so my son doesn’t like being swaddled- he won’t sleep if he is..

Tonight is our first night out of the hospital and he keeps rolling to his side already to sleep. I’ll put him back on his back and he will pull his body to the side to sleep again.

Is this safe? I literally can’t get him to stop! And I’m super worried he will roll into the side of the bassinet or he will roll onto his tummy. Anyone else experiencing this/know if it’s okay?