When Im sitting upright, all the baby movements I feel are only ever on the top right hand side of my belly! I had a check up on Fri and on that day my baby's head was up the top of my uterus, so still plenty of room to move inside I guess. I'd suggest its quite normal to feel less dramatic movements as baby grows and grows.
When I was pg with Cierra she had her foot lodged under my rib cage for the last 2 weeks which was pretty uncomfy for me. When she was born , you could see what affect that had on her ankle!