My Drs had me check it in the morning before I eat, before each meal, an hour after each meal and at bedtime. But anymore, I eat regular small meals, watch my sugars and carbohydrates and mix the sugars/carbohydrates with protein. No fruit drinks or sugar in drinks because that enters the blood stream real fast. Eat some fruit with skin when you have cereal so the sugar enters your system slower. Oatmeal (unsweetened) with unsweetened low-fat yogurt and blueberries is my go to breakfast.
Eat smaller portions of you eat sugar/carbs.
I used to work in the hospital and had to count the diabetics sugars