My 12wk bb is only doing 45min Naps, should I be worried, he sleeps very well at night, from 7:30pm to around 7am. He tends to cry in his sleep around an hour after we put him to bed. I've tried everything to try & get him to Nap, i.e ignoring him when he wakes up, staying in his room and trying to get him to sleep by sssh pat method. I don't know what else to try. The only thing I can think off, is that the light through the curtains bothers him, but I don't want to have black out blinds incase he gets use to them which will cause a problem when he starts nursery. Please I need some advise. PS - Until today he napped for 1i/2 hours during the morning Nap