Ok unusually for me not sarcasm..so..
Daisy usually is tagged in to new members give everyone an intro to low carbing.. you may have missed out this extremely useful guide so here's a link.
https://www.diabetes.co.uk/forum/threads/basic-information-for-newly-diagnosed-diabetics.26870/
Keto is the state where your body is running or stored and eaten fat rather than glucose (obtained from carbohydrate ingestion) So effectively where you are "in ketosis" your body is using its stored fat as energy thus leading to weight loss.
This can usually be achieved by cutting way down on dietary carbohydrate (less than 20g per day should almost guarantee ketones in almost everyone). Its a great way to lower blood sugars quickly, lose weight and feel great.
As for your initial post
I'll try to answer the points one by one.
1. Fruit is best avoided by those with T2.. Fructose is processed directly by the liver and as a lot of T2's have NAFLD its best not to add to an already stressed organ by overworking it. So in tis case your DN's were half right. Apart from a few berries 50g of raspberries once or twice a week I avoid fruit totally.
2. "X-pert" is usually quite low carb advocating so that could be useful but only if you remember what you learnt.
3. The Eatwell Plate/Guide is designed for the metabolically healthy. (although it's probably not all that good even for them). You have T2 diabetes so you have a problematic metabolism so Eatwell is not for you.
4. The "fats causing atherosclerosis" is outdated rubbish. Fats keep us full there's no need to avoid them although no need to add too many extra..
5. If you can eat only 2 meals a day that's great but don't snack. Eating will cause you to produce insulin and excess insulin isn't good as it leads to storage of carbs as fat.
6. You're still here so you must think that the people who have been there and done it themselves may know more than a DN?
7. Don't have "treats' eat proper food twice a day in a large enough meal so you don't get hungry weekdays and weekends are the same.
8. Scales are great to measure food if you are going to record it and use the data along with blood sugar readings to see which foods cause your blood sugars to go up. The "tare" just means you can reset to zero after adding food to make recording easier without having to do subtraction.
9. Carbohydrates are carbohydrates. I'm not a believer in Low and High GI being important for a T2 just avoid the carbs altogether if you can.
10. Self testing is great providing you use the data and do something about it.
No your surgery probably won't fund it a sorry state of affairs but where we are today with the NHS.
11. HbA1c's are like a regular average check.. blood glucose readings before and after food show more detailed info.
That's my 2p on your post. If you have any more questions I can happily go into more detail but that just about sums up my 3 1/2 years of being here and how to put T2 into remission...
Good luck!