If bub is up and playing from 6:30am this could be why bub is getting tired early. Treat all waking before 7am as a night waking. Feed in the dark, no talking, playing. Change the happy if necessary. Re-wrap bub and put bub back to bed. Don't let dad try and pull faces at bub! Get bub up at 7am or after 20 minutes sleep (eg if bub falls asleep at 6:50).