ADD and now diabetic

My ADD husband found out today he now has type 2 diabetes. He knew this was coming, as he had several borderline labs. Yet today he was "so shocked". :/ He says he's been "busting his balls" with diet and exercise. I say- I'm not so shocked bc I watched you down a 32 oz Coke and ice cream 3 days ago. Oh- but that was a special occasion! It wasn't, other than being a Saturday. So now I have this added onto my already full and overflowing plate. He won't take the time to learn about it or plan meals. I am sure I will be expected to learn and make appropriate meals for him and our 5 kids. That's all I needed was ONE MORE THING to have to deal with.