This is B at 2 months working on being able to lift up his head.
This is B at 4 months, propping up on his elbows.
This is B at 6 months, pushing himself up with straight arms.
Right now, we're working on getting the trunk of his body stronger so that he'll be able to sit independently...then on to crawling, walking, jumping, running. He'll definitely be on his own schedule as far as when he learns to do these things since his low muscle tone makes learning these things really hard work. I am, and will continue to be, immensely proud of each new skill he learns.