Hi Lynne , I hope your blurry vision soon starts to clear up soon.
I don't know if you already know but just incase you don't , it's carbs that our bodies can't handle too well, sugar is just another type of carb. Please don't go too mad at it first as it's best not to lower your BGs too fast , Try to cut down a bit on things like , potatoes, pasta, bread and rice. Root vegetables tend to be more carby than those that grow above ground , we need to be careful about fruit too some of us tolerate berries better, um grapes are little sugar bombs.
So things like eggs, cheese , fish and meat if you eat it are fine, fill up on veg, a few nuts make a good snack. Good quality sausages and burgers are not on the no list either nor is bacon.
When I'm thirsty I prefer a fizzy drink and as I like sparkling water (it is n acquired taste) that's what I usually have, once your glucose levels come down the thirst should go.
Perhaps if you tell us what you like to eat we can come up with suggestion or replacements you should also check out the food/carbs queries forum over in the newbies section for info and recipes
https://forum.diabetes.org.uk/boards/forums/food-carb-queries-recipes.4/
Exersize is a big help too, walking is good .
I know it probably seems impossible atm, but just take a look round here and you will see we are a happy (we'll mostly happy) bunch of people, some of whom due to having diabetes are healthier/fitter than they have ever been in their lives