I can relate, years before I was diagnosed with hep C my sleep patterns went crazy. I would always wake up between 2-3 am, I finally read (in a health book) that with some people with liver disease, it seems there is a period when the liver changes function.....from digisestion/ body toxin clearing, During this stage.. you can wake right up. Well now I take 4 mg of clonazepam, right before bed, and that usually works. The stress of being sick is enough to keep my awake.