Can my child’s size cause him to take longer for milestones?

C

My son has been really big every since he was born. He is 12 weeks old and is 19 pounds and 26 inches tall. He can hold his head up super well but hasn’t started to roll over yet. And he has trouble in the jumparoo cause of the weight of his head lol.

Was your Baby big? Did they have troubles rolling etc? I’m worried I’m not doing enough for him tummy time wise. But he does at least 20 minutes a day.