I'm not trying to be a dr, but I'm on Metformin 850mg, one morning, one night.
I complained my throat feels like a lot of mucous, I can't eat much. Eat a bit and feel nauseous.
Later dr, dropped it to one morning 850mg, then I feel better.
I also have 3 other types of diabetes pills. My current hb1ac is 7.8
This is just a reference, follow your dr prescription is the best.
Nowadays, I tried to eat mostly vegetables. I seldom have meat, pork or chicken.
Have a big cup of green tea, and drink it for the day.