E.M.
I am extremely confused by this question. Diabetes in children is typically an extremely serious diagnosis, involving the care of several experts including a pediatric endocrinologist, dietician, and others. Please be sure that you fully understand the diagnosis that your doctor has given you. If you do not, ask questions until you do. If your child is diabetic or "borderline" diabetic, that is not the kind of thing that they should give you a few snacks tips about and send you on your way.