10 movements in an hour time any hour of the day
Maybe he moved positions or is just tired
I'm due in October also and have days where he's not as active and the movements are not as strong. Usually followed by days/nights like this where he won't settle down for anything.
Im pregnant with my first baby boy and he will do the same thing. All it is is that he is tired. He wares himself out and then takes a couple days to recouperate his strength.