Husband refusing to accept T2

Hubby was diagnosed T2 10 years ago, in mid 30's.

Had been doing really well during all that time with diet /exercise / testing x6 per day. Then about 2 years ago, our (pretty good) GP said it was ok to not test, and just get the HbA1c done every 3 months, and took the tester strips off his prescription. (He was then on 2x 500 metformin.) From that point his bloods steadily rose, as he seemed to lose interest in exercise, and starting eating the junk he used to have before being diagnosed. His meds were increased to 2x850 metformin and 1x30mg gliclazide last summer, when his HbA1c was 66. Still he continued to eat what he liked, and only do some occasional exercise. He was due for another HbA1c test last October, but didn't go. At Christmas he got the flu, so had to see his GP, who booked him for a fasting blood test. It came back at over 100 - (he wouldn't tell me the exact figure, but said it equated to something like 16 in old money.)

His GP gave him a talking too. Increased his glicazide to 2x30mg, (plus the 2x850 metformin), put tester strips back on his prescription, and said he must test, and get his bloods down. I thought getting such a high HbA1c may have shocked him into taking action, but here we are 4 weeks later, with no real changes to diet, and him only testing occasionally once a day before breakfast. The other day we had a massive row in the supermarket, when he was putting cake and biscuits into the trolly. I said he shouldn't be doing that -he said he didn't care. I had to leave the shopping to him, and go to the car for a good cry. He has a wife and 2 daughters who love him. I want us to have a long and happy time together, but he seems to have hit the self destruct button, and there is nothing I can say or do to change it. He is a loving a gentle man, but very stubborn. I try and do him healthy / low carb food wherever possible, but he snacks on junk. IE last night I made a chicken and veg casserole. He had that; then a hour later ate the best part of a family packet of crisps. The other night he brought in a choc Boost bar he'd got from the petrol station. I am at a complete loss as to how to try and help him go back to his good ways.

Sorry for the long post. I just needed to get it all off my chest....

Thanks for you replies and kind words. I am not expecting a miracle over night; and I do appreciate that its him that needs to make the move to change his ways. Our girls are early teens. They understand he needs to eat the right foods to stay healthy. We all eat the same foods together, but he now wants the 'occasional treats' as the regular stuff. He wants to treat himself at the weekend after a long week at work, which is perfectly understandable, but not when they then continue into the week days as well! I did manage to talk to him a bit after Christmas, and he did say that he knew he had to change his ways, but each weekend is always the last one he will have this cake or that sweet, and he will start to exercise again from next week........