Our EWs aren't as early as some on here, but I'm still trying to get our mornings a little later (they're currently anywhere from 5.15-6.30). I'm doing is pushing the morning nap half an hour later (to 12.30) and pushing bedtime half an hour later too (to 7.30). We're on day 2.
Smo, we had a few EWs from hunger, it was on days when Stan had been at nursery and they do the afternoon meal earlier than we would have it at home, and he was just so hungry by 4.30am. So on those days, now I give him a nice filling snack about half an hour before bed, maybe some toast and cream cheese, or a scrambled egg. Is that something you could try?