I kinda agree with Joh. Every baby is different. Jesse sleeps like an angel at night but only cat naps during the day. As long as he has those cat naps then he's a happy boy in the evening. I mean his cat naps could only be fore half an hour to an hour between each feed every 4 hours. He smiles day in a day out, plays, goos etc.. so do what is best for your DS.. my sister's DS didnt sleep during the day at all and he's now 7 and perfectly health and smart and fine.