s all anecdotal (not science-based), but it seems to help some people ...
soup -- lots of
soup in small portions, applesauce, yogourt, maybe that new V-8 (or a generic copy) with vegetable juice masked by fruit juice ...
If the diarrhaea is still going strong, Imodium works, but tends to really plug things up ... have to keep the fluids coming -- dark, brownish urine is a symptom of getting-serious fluid loss.
For sleep, benzos (Valium, Klonopin, etc. are the best in the short run ...