Yor husband needs what you need. Understanding of his disease. Type 2 can be almost or maybe as difficult to manage as Type 1. I know that being insulin dependent is hard, I know because I am T2 and I use an insulin pump. I have been both insulin dependent and non-insulin dependent and I'll have to say neither way is a piece of cake.
For most T2's sucessful treatment means prevention. If you or I are having high BG we have the means to correct it. For your husband the only thing that can correct his high bg is time. So a good diet and exercise is very important for him because he has to prevent high BG.
There is a lot of stigma attached to being T2 everyone thinks they did it to themselves. Being overweight did not cause his disease but losing weight is one of the best treatments for it.
It will be easy for your husband to dismiss his type 2 as not being as serious as your T1, please don't let him think so because in the end T2 can be just as damaging if not treated properly.
My best advice is not to pressure him, instead ask him to join you in this diabetes lifestyle because what he needs is what you need, minus the insulin of course.