carina62, hi there and welcome. Yes, you can do something about your diabetes, read the posts on here they are all true, real people, real struggles and real results.
When I started the BSD my FBG was 190 or 10.5 and had been that high for around a year after a nutritionist put me on a high carb diet to stop me from getting low readings (as I usually had). My HbA1c went from 5.5 to 8.2 in 6 months and I was in despair. Then I heard about this plan (it is not a diet it is a lifestyle) and ordered the book, read it, spent a couple of days clearing out my kitchen of any junk, sat down and planned a menu (using the ones in the back of the book) then did a big shop of all the things I would need. Within 2 weeks my FBG was down to 136 or 7.5 and 2 weeks later 120 or 6.6. I have been on the diet for 7 months and, although I have not lost masses of weight (I was 12st 10 now 11st 6) I have got my HbA1c down to 5.9, not only that but I have also reduced my insulin from 38 units to 22 units. My cholesterol and trigylicerides (fatty liver) have also improved to better than normal and my blood pressure is down too.
Get the book, read it and follow it is my advice. Even if you just stop eating what we call white carbs, starchy carbs or devil carbs (bread, potato, rice, pasta, breakfast cereals and other cereals as well as sugar and any processed foods). It might sound like a big ask but you will soon get used to it and find things to replace them like cauliflower rice, mashed celeriac, spirillized courgette.
My advice to you is, just do it. Keep reading posts and keep posting, nothing you ask won’t have been asked before, no-one will judge or criticise here. You have just joined a wonderful community of people who have chosen this way of life.
Good luck.