You should eat more vegetables rather than a lot of fruit. I know that a study done on humans using CR has effectively cured a person in one study done by luigi Fontana. They restricted calaries by 20% and eat only food high in nutrition. Avoid Refined sugars, the majority of carbs should come from Complex Carbs like sweet potato, Oats (porridge) and Eat a lot of vegetables, healthy fats like Olive Oil, Flax oil or Fish oil, some fruits and good protein sources such as fish and chicken.
at the end of the study the person had results that was well within normal limits and was not considered a diabetic anymore aslong as she kept it up. This all happened within a year of the study.
Taking Trans-Resveratrol before about 20-30 minutes before a meal also prevents glucose spikes. Could lower glucose by 10% post meal and fasting.
Green Tea or an extract of it will also help your condition!
If you have any questions please feel free to email me! I am part of one of these studies doing CR and have gained some good knowledge in nutrition over past year while being part of the study.
Watch the video on the left, this was one of the studies! http://video.search.yahoo.com/search/video?ei=UTF-8&fr=sfp&p=calorie+restriction