Rolling baby

Christine
Hello! I have no expierence with babies at all and mine is 6 weeks. Since about 3 he has been rolling from his back to side to sleep and belly to side during tummy time. Everything I read says they shouldn't be doing that yet and it's really really early- but everyone I show says it looks intentional! And he keeps getting better at it as the days go on. What do you ladies think? Can a baby this young actually roll intentionally? Dr says he's a strong boy, but hasn't seen it happen and said it probably wasn't intentional.