Hi Candice,
Your husband sounds to me like he is doing great for a newly diagnosed diabetic. Choleterol and weight loss are important too.
Just because the blood sugars are still high does not mean he has failed. It takes a lot of exercise and diet to keep all of this in control. Its a complete life changing event. My blood sugars can be like a roller coaster. Stress, illness makes them go higher.
Tell him to keep a positive attitude about what he has done. My husband is constantly telling me that and I appreciate his support. I commend you on being supportive but if he needs to have a fit let him you may learn what's really bothering him.
Good luck to both of you!
Maggie