22 month old has always been an early riser (5-5:30am) but has been waking up at 4:30 for the past month. Wakes up happy, singing and shouting so not obviously tired. Bedtime 7-7:30, goes down like a dream. Double blackout blinds, white noise. Naps 10am - 12 if I'm lucky. Sometimes will fight on until around 1ish, but then will usually nap for 2 hours. So 11 hours total out of a 24 hour period. Surely this is too little sleep to be had at this age, or have I just got a child who doesn't need much? Any ideas welcomed. I can't just leave him shouting in his room as he wakes his brother up and then I have an overly tired 5 year old to deal with too.