Hi Sleepie,
I've experienced sweatiness, fast heart rate, and irritability as low blood sugar. When I ate three meals a day, it helped. I kept it simple/no cooking until I felt up to it: Cereal, milk, fruit, for breakfast, peanut butter and jelly on whole grain bread for lunch, fruit and nuts for snack, frozen chicken burger on a bun with some frozen veggies cooked up in the microwave for dinner. I kept it very simple. I felt a lot better eating three meals a day.
You can do this. You deserve a happy, serene, sober life. (((hugs)))