Probably the opposite worry to most. Our three month old son is sleeping a lot and I'm worried that he isn't spending much time awake. He gets tired after an hour (sometimes an hour and a half) of being awake and if he doesn't get a nap he gets so overtired and cranky. It takes us a while to get him down for a nap (sometimes 45mins of cuddling and rocking as he can't seem to self settle) so I feel like he never actually has anytime awake to learn and play. It is incredibly hot in our house so he has only been sleeping in a nappy and thin sleep sack with a fan on. He is formula fed and is eating enough (roughly the recommended) so he should have enough energy so I don't understand. Should I be worried about how much he is sleeping?