Hi akc74. I am a child sleep consultant and this is such a common problem!! You say he wakes at 5.45 am on the dot every day which strongly suggests an habitual waking. Have you tried 'wake-to-sleep'? This can be an unpopular method because it involves setting your alarm an hour earlier than the usual wake up time in your case 4.45am!! You go in and disturb him and disrupt his sleep cycle. To do this you just stroke his face, tickle him gently or give him a little shake if he is a deep sleeper. You are aiming to disturb him enough that he rolls over/briefly opens his eyes/bats your hand away...then falls back to sleep (which don't worry, he will do). This disrupts that sleep cycle and breaks the habit of the early waking. It sound insane but it really does work in the majority of cases, mostly where there is a very regular wake up habit and there are no other obvious causes. The other thing I would suggest would be that you avoid the morning nap if at all possible, it woiuld be better, if he is really exhausted, to bring the lunchtime nap forward. As he is waking at 5.45 am and probably missing his last sleep cycle of the night, if you put him down early to 'catch up' you are encouraging this last cycle to become fragmented from the rest of his night sleep and exacerbating the habit. I hope this all makes sense (message me if not) and that is works!! Good luck, Nicola www.childsleepsolutions.co.uk