You just cannot catch a break on this regimen, can you. Ugh! Im so sorry you aren't feeling well.
For the sludge feeling in the mouth, I tried hydrogen peroxide mixed half and half with water as a rinse and spit. It did help some, but nothing took away that burned, raw feeling you are talking about. I used the Ulcerease to kind of numb it up and tried to eat that way.
The only thing I can think of that you can try for sleep off the top of my head is melatonin, as you are not wanting to do the Ativan. Like most things, it works for some and not for others. I started doing some self hypnosis CDs that actually work for me. Maybe you could look into that? I ordered mine on Amazon, and surprisingly they actually do work most of the time. Also, like KDR mentioned, acupuncture might help a lot of your symptoms, if it is something you feel like you could try.
Lots of prayers headed your way....and big cyber hugs. I sure hope you are feeling better soon.