I've also come off Metformin thanks to LCHF. I was on three a day. My last HbA1c was at 5, so my GP agreed I could stop the pills for three months to see what happens. I'm due another test in June and am very confident my levels won't have increased, so am sure my GP will agree with me staying off the meds.
Having said that, I did find it a bit more challenging at first as my finger-prick tests were showing an increase. I lowered my carbs and got it back under control again.
Hope you find your way, too.