hi Katnip63 and welcome to the forums. We've all been exactly where you are right now - newly diagnosed and unclear about what to do. Unfortunately the advice you get from the NHS isn't always the most helpful, and the internet is full of confusing and misleading opinion and factoids.
It's why this forum is important. People here largely post from their own experience, or information found from reputable sources. For example, I can't tell you much about taking metformin, having never been on it, but there are plenty who can. Many of us here have found that a low-carb lifestyle has a huge positive impact on blood glucose levels and diabretic symptoms and complications. There's no single "right" way to do this - it's best if you find the path that works for you and gives you the results you want.
Couple of questions, which will help people respond to you: what was your HbA1c level at diagnosis? And are you using a glucometer to test your blood glucose before and after eating?