Are you a doctor? All my doctor did was look at my A1C. He also said that he could not even get a successful tri-glyceride test because my carbohydrates were so high. I was chain drinking Coca-Cola every day, kept a huge container of atomic fireballs on my desk at work and consumed bags of gummy bears because The Doctor at the time, Tom Baker, ate jelly babies. That plus the usual ice cream, cakes and cookies made the diagnosis a cinch as far as I could tell.
If you are wondering, right then, I stopped my excessive sugar intake. I read the labels and don't buy anything over 6 grams of sugar per serving. I'm well controlled with Metformin and Glimepiride and I've never had a problem at all.
https://www.healthline.com/nutrition/4-supplements-as-powerful-as-drugs#TOC_TITLE_HDR_1
#1, berberine, reportedly is just as effective as Metformin.