Along with diet and exercise remember one thing - more important than this to is to keep yourself as stress free as you can.
Stress causes more increase in blood
sugar, cause high blood pressur, acidity and a host of other problems then diet our lack of exercise.
Try to make sure that you have dinner at least two hours before going to sleep.
And sleep 8 hours daily, this will help you in a long way in reducing your blood sugars, blood pressure, and preventing or delaying the onset of many medical problems.