You son sounds amazing. It is great when a parent raises great kid. It also sounds like you took a difficult situation (diabetes) and you figured it out.
I do have a couple of observations But first let me tell you I am the father of two sons I love so much. They are 30 and 33, so I have been around boys my whole life. I was also 17 years old, when I was Dx'd. I have now been a type 1 diabetic for 37 years, and I am proud to say I have been married up for 35 years.
Now what i am going to say may seem harsh or difficult so if you do not want feel like reading this, it is ok to pass it over.
I want to say first off that you have done an important job. It sounds like you have stuck to the letter of the law, in diabetic treatment.
I want to focus on something you said about him being 14 or 15 and you are running out of time to influence your son. I submit that you have already lost the war on this one. Your son will grow up, he will take total control of his health and you really will not be able to intervene very well. I know you know this but it is important to say it
What you have to do is figure out a way for him to take his responsibility for this disease. You cannot do it and if you do not let up he wont either.
First, remember this is his disease. He has to own it. Right now you own it and you have to shift ownership. There is one thing I suspect. When he owns it he will cut some corners and not do all the testing you have him doing, I would guess that many diabetics, probable most, do not always check their BG 30 minutes before each meal. I know I don't, just like I know I should.
So here is my tough love portion. Stop. Stop doing it, stop insisting on it and mostly stop texting him when he stays over with a friend. If you don't you are raising an a profession dependent.
So how do you get things to work out? First you let him work things out, he already did this over his sleep over. I know he didn't do what you wanted and what his routine is but he managed. Ok he managed poorly but managed.
Second, you must stop looking at his glucose meter. I know it is difficult but trust him. It is his disease.
Finally let him make at least joint decisions about management of his disease. Encourage him to make better decisions. He needs practice because he doesn't have 4 years he has less than 1 I imagine. Well ok you are thinking so long as he lives here he will follow your rules. Truth is the more you press the less compliant he will be. I know I was 17, I understand not being compliant.
A doctor told me something that I never forget. He said that when I got sick and tired of being sick and tired, I would finally take care of myself. Well that took 20 years. 20 years when I refused to see a doctor.
I know you don't want this kind of rejection for your son. I know you want the best. Remember I have two sons I love more than I can describe. I love what they have become and how they got there. Oh and yes I made tons of mistakes as they were growing up. But here is one mistake I did not make. I tried to make them responsible for their own actions and happiness. I trust that with such an intelligent kid you can do the same. But my strongest advice is this, let him feel sick. Look for ways to make him responsible for his own actions.
Good luck, I am pulling for you and him.
Rick Phillips