My appetite took about 10 days to come back after surgery...for the first week I was careful by eating soups, liquidy things....
Each hospital provider gives out different timings for sloppy/liquid foods, then mushy/mashed foods etc....
Check with yours to find out what your meant to be on.
Also try and find out if they put any 'Fill' in your band upon surgery, I only recently found out that I had 1ml in my 10ml band at surgery, and ive just had my first fill (5 weeks post op)...and have 3.5ml in my band now....hunger doesnt happen now, I do however get my belly grumbling at me if I havent eaten...so I stick to the 3 meal rule, with 2 snacks....(one of those snacks being a pudding/desert from weight watchers etc for after dinner)