Still not rolling over?

Leila

Hey all, my son will be 6 months old on the 11th and he is still not rolling over! He can sit up without support for the most part, still a little wobbly, but won’t roll over. We do tons of tummy time, every day, but he doesn’t particularly like it. Sometimes he is ok but other times he either whines or tries to go to sleep (I don’t let him). At 3 months old he would roll over from his tummy to back every single time but at 4 months he stopped. He has rolled from his back to tummy while on my bed twice before but never on the floor. I’m starting to get concerned. Anyone else going thru the same?