Hi Shaz, my heart goes out to you, of course you worry yourself crazy.
I am type 2, so not much use to you, I hope you dont mind sticking my oar in, but from reading your posts it looks as if your son is feeling just as helpless as you are, he seems to be depressed?
Can you ask him to sit down with you and talk things over, ask him why he finds it so hard to accept his diabetes, ask what help he thinks that he needs to manage his diabetes, offer to work with him as a team, kind of support each other. Admit to him that you are feeling helpless, you worry about his well being, because you are his Mum and you love him, assure him that you dont want to sound as if you are nagging, on his case all the time.
He might be really, really scared you know, avoiding the issue will help him stay in the denial phase.
Thing is that he can eat sweet things, but the right sort of sweet things, show him the Chocolate Paradise thread, I know a few non-diabetic teens who adore some of the chocolate recipes, the Bounty is most popular, so are the truffles.
There are cakes in that thread, also in the low carb recipe thread. Experiment with food, dont single him out, some of these recipes can be enjoyed by the whole family, I am thinking of the pizza recipe, the chicken nuggets, the cashew chilli coated chicken fillets, all foods teens tend to like, you two could experiment together, cook and bake together, become a team, both of you lose the fear of diabetes, gang up on it and beat that beast together.
I mean what you have done so far has not worked with him, so its time to try a new approach? I can well imagine that its not easy, but little steps in the right direction will lead to bigger ones.
Introduce him to this forum, there is a section for young people, me might want to chat to someone who knows exactly what he is going through, someone a bit more his age group.
A big, big hug to both of you, I hope you can work out something so that you both can be happier and healthy x x