| At 13, my worst fear was that I would never have a boyfriend in my lifetime! Seriously, diabetes wasn't much of a drama at that time. I will say with caution, that that's about the age where teens start slowing down on the doctor appointments. (Back in the dinasaur days, we didn't need prescriptions for D supplies!)...I maybe went to see my pediatrician a couple of times...then off to college. Looking back, I would have like more encouragement to see a doctor (that I liked!)...
I also recommend diabetes camp if he's not "too old"...most go til about 13 or 14. I didn't go until that age and had a great time.
Good luck...and sorry to hear about the loss of his uncle. My family went through that last year with some of my younger relatives...it is tough. | 
