Not moving much..

Ashley🌹🌹🌺 • I'm a FTM with experience of babies from raising my sister. I'm an herbal nut who's madly in love with my soulmate.
36w, my son has dropped with at least his his head in the birth canal. I believe that he's dropped further in the last few days.  
This is my question---as they drop, is it usual to not feel them moving around as much? My son is a known 3+ hr sleeper, however he'll usually move around more than this. 
He's moving, but his kicks and pushes have diminished significantly in just the last few hours (which is when I thought I felt him drop + my stomach is lower by a few inches)
Normal?? Not normal?? My doctor has already left the office so I'm asking here before running to the hospital.