DS is 19 months old. He's always been an early riser. Typically gets up between 5:30 and 6am. He's been having a nap about noon and it's usually between 1 1/2 -2 hours. But I find it hard to get him to last until 7pm. Do you think it would help to move his nap a little later? I'm just worried because he wakes so early that making it to noon is tough enough and I don't want his nap to fall apart because he's overtired.