I am on a 5:2 diet. Eating 650 calories 2 days at 1600-1800 hundred the other days. I started about 6 days ago. At first my blood sugars dropped from 6-7 fasting. But in the last two days have soared to 8.2. Each day I have been walking about 1.5 hrs to 2 hrs and exercising in the gym for an...