I already take 500 mg Metaformin, 2 tablets twice daily plus Gliclazide 30 mg, once a day. I don't always remember to take them and some days, I eat sweets. I 've learned to eat a vegetable broth soup with a dribbled egg, for 2-3 days to help bring my sugars down. Yes, it works. Talk to your Dr and see if there's options to permitted 'doseage' you're allowed. He may offer a new amount.
Maybe you need something else. Maybe a smaller dose of glipizide with the metformin. Your doctor has to prescribe that
My answer is you need to bring that up with your doctor. Have you recently been diagnosed with DM2? Remember, this is a progrssive disease.
It’s possible that Metformin isn’t the right medication for you. There quite a few other medications you can try. I’ve read about Berberine, but wouldn’t use it unless the doctor okays it. From what I’ve read, Berberine is supposed to work the same/similar way as Metformin, so if Metformin isn’t working, it’s likely Berberine wouldn’t work either.
You should talk to your doctor and ask for a different medication that might work better.