Thanks for tagging me @Indy5I
One or two of my symptoms were similar.
I was certainly more thirsty. I had had disturbed sleep and muscle pains on a regular basis for years. I am not sure if aspartame made them worse. Until now I blamed insulin resistance for the muscle pains and self imposed bad sleep patterns when i trained myself to wake frequently because i was concerned about waking to check on my baby years before. Maybe the aspartame addiction made them worse? I didn't notice them get worse when i was in withdrawal though.
I wasn't diabetic at the time so don't know about about ketone or BG levels.
I now realise that my recurrent throat infections were probably down to aspartame as when i have occasionally slipped and had another diet coke my voice and throat 'aren't right'.
When I was in withdrawal the urge to have 'just one' was almost unbearable. I got really bad headaches and shooting pains up from my jaw. I had never been a 'headachy' person before then. It took me a few years to really kick the habit.
Anxiety? Well yes...that was a problem but mostly i think there were other causes for that.
What you say about having symptoms of various illnesses rings true with me. Generally I just didn't 'feel right'.
I don't think I have been much help to you as like Indy says I am T2 but I guess everyone is unique so you may not have the same symptoms as another T1 anyway.
Sounds like you are doing well with giving up as your symptoms are improving