I'm so sorry you are struggling. It is so good you are able to keep your physical strength up despite this.
Not sleeping well always affects my pain levels. I also notice an increase in pain levels with increased sugar intake so I limit that .
For sleep have you tried Epsom salt baths?
I take a warm Epsom salt bath, then read quietly for an hour or two. I also take a magnesium complex . I'm praying that things improve for you soon