hey there
my one suggestion that helped me a lot through the pre-op diet is to drink a lot of hot liquids. sounds like you don't have "free" drinks (ie: broth, sf popsicles, etc) so maybe hot herbal tea? hot liquids helped me with the hunger. chewing sf gum also helps with the desire to chew chew chew
keep posting and paying attention to what's going on inside - that helps.