Just what the title says really. DS has 4 naps a day (sometimes 5 on a tired day). I often get the impression that he hasn't really had enough sleep, as he seems tired again shortly after getting up. His naps last between 30-45 minutes. Should I just try leaving him when he wakes if I feel he needs more sleep? If so, how long would you leave him? Or should I just accept that this is the way he naps. I get the impression that many babies have settled into 2/3 longer daytime naps by now.