At this stage baby is running out of room, so some change in movement pattern is possible, but I would weigh that against the fact that reduced kicks can sometimes be a sign worth checking out properly. The safer call is to go to the hospital or KKH triage rather than wait, because they can do a CTG trace and give you a proper picture quite quickly. It is one of those situations where getting it checked out costs you maybe an hour, but the peace of mind, or the early catch if something needs attention, is worth it.