Sorry to hear that; I have a few friends who have it and not to scare you or anything but one of my best friends died from it as well. It's pretty much just constant surveilance on your part. Understand the sugar index of your meals and plan your insulin injections accordingly. If managed correctly, you should be fine but it will be a constant battle.
I would look into one the automatic insulin injectors (something like that). They test your blood sugar every couple of hours or so and give you insulin accordingly. It would definitely make it easier on your part and I would imagine be covered by your insurance. Ask your healthcare provider about it.
Also, if he has type 1 it's not from an excess of sugar, that's type 2.