It must be frustrating to have a diabetes doctor who does not believe that ANY dietary change will make a difference in diabetes? A doctor has to be completely ignorant of the science and the history of diabetes treatment to say that. Or is that view to enhance the bottom line for the only diabetes clinic in town? If he would read it, here's a paper from 26 diabetes researchers why a low carb diet should be the FIRST line of treatment. (As it was before insulin was discovered ) http://www.nutritionjrnl.com/articl...0332-3/fulltext
Also http://www.ajmc.com/contributor/sar...ent-to-reversal

And here's a terrific presentation by Dr Westman that starts with how LCHF was used to treat diabetes years ago and why it should still be first line treatment..this 30 minute video is available without signing up for membership (also free for a month). https://www.dietdoctor.com/lchf-dia...dr-eric-westman

Have you considered asking other GP's in town if they would support your efforts to improve BG through nutrition? This way: https://www.dietdoctor.com/diabetes
Maybe a younger doctor not embedded with the pharma solution? You do not require a hospital with a diabetes clinic if a GP will work with you. If Metformin of all forms is making you that ill they are NOT the best for you and seems time for different solutions. Are you in the US? ...there are Low Carb doctors in many states, and often you can see them once in person and then manage the diet and meds by phone. Is that HbA1c number in mmol/mol or a blood sugar equivalent? US is normally quoted in % so I assumed the later.

This is a 700 club story about treating diabetes with food http://www1.cbn.com/cbnnews/healths...d-Cure-Diabetes
Ignoring Pat Robertson winging off about corn subsidies (though I completely agree ) the video shows Dr Westman and two women I know IRL who continue to manage their BG with a LC diet. They have not reached a "normal" BMI but no longer have diabetes and take no meds either. You are NOT diabetic because you are overweight, but because you are insulin resistant. See Point 3 in the first paper linked above. Again, Dr Fung has many articles explaining this a few different ways. And Sarah Hallberg's 18 minute TEDTalk is good too.

You sound like me complaining about ACV at the start of the Fung thread in 2014 Gag, gag. I only put 1 or 2 T in a glass of ice water or carbonated water and then cheated ... Added a flavored sweetener (like SF Mio type water enhancers).
Like fasting, I finally got use to it but still have no idea how much good it does?

You can do fasting any way that fits your schedule. A big sausage and egg breakfast, followed within 4-8 hours by a burger and salad? Then the rest of the day drink coffee, tea, and broth. Can even add some butter and coconut oil to them (only as needed) Drink carbonated water. Whatever fits your work schedule. There are more tips on the first page of The Obesity Code thread with web archives back to original instructions. If that schedule doesn't work for you, then try another until you are comfortable with some period of time to release stored fat. You should not be "starving", if you are, then eat. IF is completely flexible as to length of eating window, number of days per week.