Welcome - strictly speaking it's Fora, but only if you subscribe to the view that you should always have to use the original language's plural - myself I take the view that we've stolen it fair and square - it's our word now and we'll pluralise it our own way thanks. There's a very snobbish attachment to Latin in this respect - words from other languages we happily just stick an 's' onto.
Anyway, welcome, and great to hear you've got an open-minded nurse, that's not the case with many people. Although mine is lovely I must say. I've been a type 2 for about 6 years and I'm now managing very well (HbA1c of 38 last time) with mostly diet and exercise - just one Metformin per day. I must say, I'm probably healthier now than I have been since about age 21, and diabetes or not, I was on a downward spiral of being overweight and not exercising.
I don't feel quite so negative about my diagnosis as many people do - I see it as a wake up call and something that's now lurking in the background if I don't actively keep on my toes - it'll swoop in and punish me, but I have no intention of letting it. I refuse to feel sorry for myself anymore, it's not a death sentence, but I can't just leave it to the medical profession to micro-manage it for me.
Which is why these forums are great - although do beware, the people here aren't medical professionals and that's a double-edged sword - you won't be fed the NICE guidelines which many here feel are wrong, but the level of evidence is mostly anecdotal - "this worked for me" and sometimes that's fine, but other times, you'll find people are recommending therapies which are not proven or 'proven not' and giving you just as must assurance that it works. People suck at this cause and effect thing and I don't exclude myself from that group. They do jump to conclusions - if you did A and B happened then A must have caused B, and it's rarely that simple, especially with something as complex as nutrition and disease.
So anyway, at the end of the day, what constitutes evidence for whatever regime you come up with is if it lowers your BG, and doesn't have negative side effects - like your cholesterol levels and feeling terrible etc. One practical thing you should definitely consider is getting hold of a meter and testing your blood sugars before and after meals - it's quite surprising what will make your BG get higher (spike) and what won't, but it'll be a unique combination for you - within some bounds obviously - if you have four of five rounds of toast with jam then that's pretty ertainly going to make your BG go too high, but maybe 2 slices of low-carb bread with jam and peanut butter will be fine.