Hello. Sorry that you are feeling confused. There is a lot of information out there and sadly a lot of misinformation. Feeling anxious and not being entirely well are things that can affect your BG readings, so may even have made them higher than they should be. COVID has negatively affected diabetes care in some practices in that people have had to wait longer for their tests. Clearly your GP and nurse are reasonably satisfied with your results and your figures are not bad although you do not say when you did the tests e.g. before a meal, first thing in the morning, after a meal etc. If you can manage to do the tests that will give you a snapshot of how you are doing. I am at present trying to control my diabetes through diet and exercise. I do test but not as much as I did at first. Some people are keen on fasting as being helpful to get control. I kept a food diary of what I ate and my BGs. This gave me the information that I needed. We are individuals and what adversely affects one person will not do so with another, e.g. oat porridge sends my BG up, others can eat it with little of no ill effect.
Many of the people on here are very knowledgeable and will be able to offer superior advice to me. I do not think not eating is the most sensible plan, maybe find out which foods you can tolerate and stick to those. We can do so much to help ourselves. Please ask questions on this forum as the people here helped me so much and continue to do so. Take care. You can and you will improve your BG levels. Good luck 🙂