8 month milestones

What is your baby doing at 8 months?my lo just turned 8 months and well he barely started sitting and I still have to sit on the floor with him bc he will throw himself everywhere! I kinda wish I could just set him down on his own so he can play but he’ll just get hurt! He also throws himself towards his belly as if he wants to crawl for whatever draws his attention but he can’t crawl yet and he hates being on his belly , instantly he turns to his back then he lays there crying till I pick him up. I’m concerned he behind on reaching his milestones on time according to google he should be more active and trust me I definitely try and sit with on the floor?!?! Any new recommendations or uplifting words lol