Mine has developed a pretty solid routine and I know what will make him move.
Anytime I mention LO moving, my mom makes a comment about how neither of us ever moved around and that the drs today would've had a field day. It's so annoying that I never mention LO moving to her.
I thought I read someplace that 10 movements over an hour was pretty typical after 28 weeks.
Is your LO a mover?