Help! Our 6 month old DS has been waking any time from 4am for the last two months. He is not hungry, cranky or crying, just awake & ready to start the day. If nearer to 4 am we generally get him back to sleep after an hour of letting him chat & coo to himself, but if nearer to 5 am then our day is started! 3 year old DD's daily routine mean we have been unable to enforce a strict nap routine for DS but he gets about 3 x 40 min naps a day. Any ideas anyone?