I too have Type 2 diabetes, and like you my fasting numbers were high. Metformin ER is what I take, once in the morning, and once in the evening just about supper time. Yes, a light snack is a very good idea, I usually eat 3 cups of plain popcorn, or 6 Vanilla Wafers and a half of a banana. I know it's difficult having Type 2 diabetes and sleep apnea all at the same time, but you can do this, I know you can. Talking to your Dr., even if it drives them crazy, is a good thing. This is your body and your life, and knowing how to best help yourself is the best way to take control of your life. I was told when I was diagnose with Type 2, was read and learn as much as you can, and never stop learning, this is your body and you are the one who needs to be in control of it! That's what my Dr. said to me. You've gotten some great advice here, and all's I can say is... I wish you all of the best. Take care of yourself, keep up with your gluclose monitoring, and your cpap monitoring, and soon it will become old hat. Best Wishes.
RemStar M Series Auto CPAP w/C-Flex, heated humidifier
Quattro Full Face Mask