Baby out of room.

Juanita👼👼👶👫💙👣 • 2 miscarriages under my belt and on my heart. Currently 39 weeks pregnant. God is good!
So my doctor's are telling me my baby is gonna be 9-10lbs and I feel bad that he's out of room. I'm a ftm so I don't know much, I'm 39w3d and he's not moving as much it makes me nervous that at any time I'm not going to feel him and think he's just asleep and him really be gone. I was just wondering if he's safe in there with absolutely no room to move?