Call your OBGYN and ask them about "Kick/Movement counts" or you can call your hospital's birthing unit and ask to speak with the triage RN.
as baby gets bigger, they have less space to move about, as long as you still feel something, and they may also get in to a position where you may not feel them until they turn. every baby is different, there is no certain amount of times you will feel baby. you may notice movement when you wake up or go to bed. babies also have very active days or days they will spend sleeping. have a word with your doctor anyway, in case you need to be checked over