| I think we need to clarify exactly what we mean here by Dawn Phenomenon. You're making it sound like it's a reaction to low blood sugar during the night, which is a totally separate issue.
In my case, I find what caused me to go from a normal BG at 4am to an elevated BG by 8am was not eating a breakfast with carbs in it. My DP was a clear case of my body being 'used' to the idea of having no food whatsoever being put in it for about 12 hours, hence a liver dump since physiologically a non-diabetic would require that.
By eating a carby breakfast (yoghurt or a slice of toast), I retrained my body to expect a carb hit in the morning, which in turn led to my liver deciding it didn't need to provide me with one by itself.
So in other words, not eating carbs in the morning makes my DP worse. | 
