Hey, sorry to hear you are suffering.. now I know that neuropathy is a strange beast and can affect everyone differently (and changes over the years as I have a lot of personal experience of) but to me this doesnt sound like a neuropathic problem (others may say different so I am open to being corrected).
It sounds like ketones and vastly swinging blood sugars to me.. (something else I have a lot of experience with). The higher your blood sugars run the higher you can be when you feel low.. a friend of mine always describes when she has ketones that the lower half of her legs feel like they have lead running through them. and the swinging can definitely make you feel weird and totally lacking in energy..
You do not say whether you are t1 or 2.. what does your doc say?
The first I would be looking to do would be to get your blood sugars more under control and the first thing to do would be reducing your carbohydrate intake. I used to suffer from actual fits as a result of hypos.. sometimes one a week at the worst 3 a day.. I have not had a fit in a year and a half because I did a big detox and went really low carb. Have a look at some of the pinned posts in the forums. Low carb is the key to gaining control of your diabetes.