A few thoughts:
It sounds like you care deeply about him, but I question if you're trying to do too many things for him. That can be bad for a number of reasons.
The possible negatives I see:
-If he wants to share him readings with you, be a part of that, but it shouldn't be something he does reluctantly. I can't stand it when I test (discretely) at the table and then everyone stops talking and asks me what my reading was.
-While neuropathy is certainly possible, it usually takes much longer than a few months to develop. Unless your husband has been undiagnosed for years, it's fairly unlikely that he has it (or at least from diabetes).
-Changing your work hours may be necessary if he has conditions that warrant it, but diabetes itself shouldn't be one of them.
The positives I see:
-shopping and cooking together is something my fiancé and I never did before, but now do together since I was diagnosed. I'd keep that up if I were you.
-Adopting his new way of eating is a wonderful thing to do. My fiancé has done that for me as well. While she doesn't eat exactly like I do, we do make meals that are similar.
I guess the central theme of what I'd suggest is to take an interest and show him that you care, but don't do things for him. He needs to be independent and he needs to feel that way too (there's a difference).