I have a... nervousness (fear, phobia)... about trying to sleep when hungry. It's a hang over from my multiple failed attempts at low fat calorie controlled weight loss. Oh, the wasted years...
Ok, pity fest over.
Anyway, that is the reason I have a wee snackette on my way to bed (currently 6 cashews). It is more of a token gesture really, since I'm not convinced that it makes any difference to my dawn phenomenon at all.
Then, in the morning, I have the snack of choice (again, currently cashews) before I get up. Usually within about 2 mins of opening my eyes.