Suggest Diet Plan For Type 1 Diabetes

I have diabetes type 1. I would like to know what the maximum daily allowance of sugar grams should be for me. I am interested in weight loss, and stumbled across the dessert diet which has a cookie with 8 grams, a protein bar with 16 grams, and a protein powder with 1 gram of sugar per 2 tsp. Is 23 grams of sugar too much daily?