I am confused. Has your son had diabetes since 2009? That is a long time, not to know what to do. If your son has type 1 diabetes he needs insulin to replace the insulin his pancreas doesn't make. He will have to match his meal time , fast acting insulin to the carbs he eats. He will probably take a long acting basal insulin which will be determined by his fasting levels in the morning. You can work with his medical team to get the correct insulin levels.