As the baby gets bigger, its space becomes more constricted so they can't move around as much.
He prob has his days and nights mixed up in your belly. When I was pregnant with my daughter which she is now 3 months old around the last few weeks of my preg. She was like that but she had her days and nights mixed up if u sleep real good then you won't feel him kick or move if u sleep well
I dont think there is anything to be worried about, they said your baby should be kicking more, but not all the time. Babies sleep alot, when there not eating usually they are sleeping. Same with when they are still inside of you, they sleep a lot. He is probably sleeping during the times you dont feel him. You said he doesnt move or kick for most the day, but you do feel him kicking sometimes right? As long as you feel him kicking even if its not often, i wouldnt worry too much! If it really worries you, order your doctor to check things out just to put your mind at peace about this. Its understandable that you would be a bit worried because its Your first pregnancy and your new.to everything. I dont know much about it, im only 16, but my sister had the same worries as you with her first pregnancy.