I wonder if moving nap earlier might help? If they are up at 5ish they may need an earlier nap? Hugs hun, I know the struggle, my DS was a chronic EW'er...5:30am every.single.day until he was about 2/2.5 and no amount of tweaking or anything fixed it (and believe me I tried everything). It was just the way his internal clock worked. Eventually he did grow out of it but it wasn't because of anything I did. I know that is not helpful, just wanted to say I understand how frustrating it is. Nothing good happens waking at that ungodly hour lol