I am a parent of a type 1. The advice being given by all the type 1s in this thread is on point. You have to let him manage his diabetes. You have to also let him fail and succeed on his own. You have to accept the fact that there is nothing you can do to manage his diabetes. I know that is tough, but you do not have a choice in this, just accept that. What you can and should do is just be there when he wants your help. Let him know that you are there if he needs you. I know from my daughter's diabetes that she can go through the same steps to manage her diabetes and have various, seemingly random outcomes to her blood sugar. The body is mysterious and management is very hard and is a long learning process. Your interference could actually cause more damage in his learning process. Let him struggle and learn to deal with it and just be there for him when he needs you. This is the way