4 week old keeps rolling to side in bassinet

My 4 week old always rolls onto his side when in the bassinet. Is this ok? I understand it’s the newborn scrunch and they eventually grow out of it. We practice safe sleep, he’s always placed on his back when put in there, no blankets or toys etc. He does wear a love to dream sleep suit at night and has a dummy. No matter how much I move him back to his back and into the middle (he shuffles his way to the mesh side) he always rolls back to his side, always favours his left side too. Sometimes he will stay mostly flat on his back and will just turn his head to the side but most of the time he fully rolls to his side, all curled up, sometimes he throws his right leg forward and rests it in front of him so it story’s stops him rolling further forward. He isn’t showing any signs of rolling all the way over on to his belly yet. I’m just a stressed FTM and obviously want him to be safe when sleeping but I don’t know how to get him to stay flat on his back. Thanks.