Studies now indicate that type II Diabetes is a disease of carb intolerance. Your DH really needs to cut back on his daily carb servings, especially the empty white ones (white flour, white sugar, white rice, white pasta, white bread). I highly recommend Phase 3 of the Fat Flush Plan for him. It's a carb-conscious plan with healthier choices (whole grains, brown or wild rice, lots of colorful veggies - LOTS and LOTS, fiber-rich, etc).
good luck!