I've never seen a nurse, nor been given any advice other than I have read on this forum. I was told my HbAc1 was very high and I must go on Metformin immediately and stay there for the rest of my life. All he said, when I queried it, was that they had been concerned the previous year, but were far more concerned that I had blood cancer (which I didn't). Anyway, I went on Metformin and have been on it ever since. Haven't really changed my diet, and my HbAc1 was pre-diabetic a year ago. Then I went on the Ascend Plus trial, and have to take another tablet, either a placebo or 14 mg oral semaglutide (it's the latter!). and have since lost significant weight and my HbAc1 is now normal! And I still haven't changed my diet, other than to eat less because I get less hungry!
But I also have - or had - high cholesterol, and, as I said to another GP in the practice (a much nicer one, who doesn't panic at every little fluctuation from normal), if I eat to please my diabetes, my cholesterol doesn't like it, and if I eat to please my cholesterol, my diabetes doesn't like it! So moderation in all things, and if I want a small scoop of ice-cream, I'll have it!