With HbA1c 9.2 you've probably been diabetic for several years, & complications are beginning. While we cannot diagnose, we can advise from experience.
I was diagnosed in 2000 when I went to the Dr with numbness in one thigh - diabetic neuropathy. I was given to understand that I would have to live with it, & that controlling blood glucose was the best treatment. I was also given the usual diet advice - plenty of complex carbs, & low fat/sugar/salt. After 7-8 years the leg muscle pain was crippling. I found this forum & found the recommendation from some members to reduce carbs drastically. Within 3 months I was out of pain, & 4 years on I am well & free from symptoms, well & active.
AFAIK the best advice is a low carb diet, & get your energy from fats as they occur in your food.
See this link for general advice.