I recommend DDR. I don't remember if you have a game console, but they can be gotten fairly cheaply if you go used. The later versions even have a workout mode.

I'm guessing that your university has a gym with a weight room. Use it if there's not something physical that prevents it.

Ideally, find a workout partner to help keep you motivated.

Whatever you do, don't just give up, and don't fall to denial. Both types of diabetes are controllable, and you can live with them.