I was diagnosed T2D in January of last year. When testing, my highest numbers of the day were my fasting glucose which I found out was caused by dawn syndrome. My A1C dropped regularly over the year so I wasn't concerned, I just figured that it was just the way my body worked. I have been off the glipizide since early December and in the last 2 months, my fasting BG has dropped into the ideal range (usually in the mid 80's with the occasional number in the 90's).

I guess dawn syndrome is not permanent. I also wonder if stopping the medication had anything to do with it. I know glipizide is only effective for about 12 hours and I took it once a day in the morning.