Difficult time for you having to deal with diabetes following a stroke. However once your hubby gets his blood sugars down he will hopefully have improved health.
His hba1c is not impossibly high but testing his blood sugar a few times a day will give him focus on reducing it by seeing how different foods affect him.
I'm sure someone will come along with links for buying a cheap meter and strips . This is the
meter on Amazon but not sure if it's the cheapest place. You will need extra strips and lancets (the strips are a use once product the lancets urmh most people change annually - I joke but not every time). Ideally you test on waking to get your fasting level then if you have breakfast soonish then 2 hours after breakfast. Test again before lunch/dinner and 2 hours after eating then finally before retiring. It sounds a lot but it does help in the early days as if you reduce carbs you will see your levels dropping. You can youtube how to test - basics warm, clean hands. Side of finger wait a couple of seconds then a little squeeze to get pinhead of blood to test.
At my first (and only to date) appt. with Diabetic nurse told to aim for under 8 before eating and under 10 after eating. These were highish, realistic targets given my high hba1c. i.e. I had to get into single figures which I did within 2 weeks. The correct figures to aim for are 4-6 before eating and under 8.5 after eating.
If he likes bread try Burgen from Tesco. Lower carb and generally tolerated well. I discovered on Saturday a jacket potato smothered in butter (fat helps when eaten with carbs not sure why) and a whole bottle of red wine meant my reading 2 hours after food was 5.4 - wine should be on prescription!
What medication has your hubby been given, is it metformin.