I know all kids are different and they will achieve milestones at different rates but i have nothing to compare DS to other than friends kids. Who by the way are crawling and walking along furniture now.
DD was in a plaster cast through most of developeing stage so i cant go off her.

He gets on his knees and rocks and then gets on his tummy and then gets cranky cause he cant go anywhere from there. He scootchers around on his bum fine but gets annoyed cause he cant move about like his sister. He tries to pull himself up on furniture but he only gets to his knees.

My son is extremely lazy i think, he knows how to roll but wont, he wont go from front to back when on the belly, he hates being on his belly.

Is he normal or what.