@P17BULL
I am T1, diagnosed in Jan and prescribed metformin and insulin straightaway.
I am only currently injecting once a day and using diet to keep my bgs down. I have novorapid but haven't developed the confidence to use it properly yet.
I came off metformin for a little while because my dose was increased so significantly I really struggled with gut issues. However, I have asked to go back on it and slowly but surely increase to a dosage that agrees with me.
My bgs have not been so erratic on metformin and it seems to make my levemir work better?! Not sure if there is any science to it or some bizarre placebo effect.
Listen to what your Dr's say - although I find they give you a broad idea but it's down to the individual to manage what works for then.
My understanding though,based on your post would be no, metformin won't help you in the absence of insulin.
The best thing I can advise is the LCHF diet in conjunction with insulin (and perhaps metformin) is the best medicine. On LCHF I do not often find myself in the position of needing to inject more than once a day. (although everyone is different of course)
Good luck with your results, regardless of which, you will be absolutely fine!