I think the general rule is 10 kicks in 2 hours. But after a while you'll understand your baby's routine and know when he's active and when he isn't. My baby's usually more active at night too, usually after 8pm. Before that if there's no food intake, he's usually asleep. But also keep in mind some mummies have a placenta position that makes it difficult for them to feel the kicks and movements. I also bought the fetal doppler thing to hear the heartbeat cos sometimes I get anxious too hahahaha