I don’t have diabetes, but at 325 I shouldn’t be taking chances. The most success I have had with dieting is to try and really understand the macronutrients involved in my foods. Even if that just means tracking the big 3 (Carbs, Proteins, Fats).
A really great site for this is www.fitday.com, I’m sure there are others but basically you just make a conscious effort to log your meals on the site and at the end of the day, week etc. it gives you a break down. It helps b/c most of the foods you would eat are already in there, so you don’t have to go looking on cans or guess how many carbs an apple has.
Finally, I’d definitely let someone else chime in, since I kind of arrived at this theory as a non-diabetic reading a lot of medical literature about the disease to understand it better. In any case, I have found that eating meals low in fat (<5g) AND low in carbs (<10g) at different times of the day has helped me drastically reduce weight.
I hope somebody else chimes in on that though, since the main crux of the theory is to not mix meals with carbs and fat, because the carbs cause an insulin rise. If their is available fat in the blood stream, the insulin then grabs that and pushes it into the adipose (fatty) tissue. However, if its protein, then it pushes it into the muscular tissue, and more protein and muscle helps burn up fat.
Again, since my theory involves normal insulin function and I’ve only really tested it on myself as a 7’ male I’d definitely consult your physician first, since its basically an Atkins diet at night and a low-fat diet in the mornings, either of which may not be good for someone with diabetes.
Good luck! Sounds like you are very anxious. Set goals, smile and know you have friends in the community who really do care, and many of whom also face your same trials and tribulations.