March babies sitting?

Nicole • Wife, and mother to a beautiful baby boy 💙💙 3.2.19

Baby boy was born march 2nd, ive seen babies thats only 2 weeks older than him sitting up really good.

He TRIES to sit, but its still very wobbly and uncoordinated. What can i do to help him with balance?. Im concerned his head is too big for him lol 😂 😩

Again could boys be slow learners than girls?