After a string of good hba1c test results around the 34 mmol/mol level including March, I reduced my Metformin by half. After my last hba1c of 34 mmol/mol at the beginning of June I stopped taking the rest of the Metformin this was done with the agreement of my GP.
I have not stopped my lchf way of eating, and my bgl are still in line with what they were before I stopped Metformin.
Edit: More info for clarity