We have not checked the qualifications of anyone posting here. If you are have any health related symptoms or concerns, you should contact your doctor who will be able to give you advice specific to your situation.
You can continue the diet on Metformin as it is incredibly unlikely to cause low blood sugar. The long term benefits of Metformin have been questioned in a recent article in the BMJ. Hopefully soon you won’t need it in any case. Good luck!