P.W.
My husband is diabetic. When diagnosed we took a short class at presbyterian hospital that showed us the correct portions by his weight and height, etc... of carbohydrates, protein and fats at each meal. It's not about sugar really. We were told to keep meals 4-6 hours apart and any snack in between should be 2 hours from the meal. Once he started eating like this, which is how all of us should eat, he felt better than he had felt in years!
Insurance paid for the course (only 2 meetings) and I bet it will for you too.
Best of Luck!