Last summer, before I went on a low(ish) carb diet my blood sugar was pretty high. HBA1C in July was 8.9. I had to get up during the night 3 or 4 times (occasionally 5 or 6!!) to go to the loo and it was getting me down too. At the beginning of September, I went on the diet and my weight fell quite a bit (about 3.5 stone) by Xmas. My blood sugars are down too, but not as far yet as I want - HBA1C in October was 6.7. I now don't need to get up during the night for the loo and can sleep through.
For a while at least, you might have to bite the bullet - but forget about biting biscuits or anything with much in the way of carbs in it. Lose the sugar, biscuits, cakes, bread, ice cream, milk, pasta, rice, potatoes and any fruit that doesn't end in "berry".
Andrew