My surgery was on Thurs (10/22) - had to stay overnight because of a hiatal hernia - and went to work on Monday, but I did cut the day short at 6 hrs instead of 8. I also work in an office/sit at a desk all day. I know I wasn't supposed to, but I also helped rake our yard the Sat. after surgery. I was careful not to overdo.
Everyone is different. I happen to be lucky enough that I get thru things like this with very little problems. I'm on soft food now and haven't found anything I can't eat (yet). I have my first fill on 12/1. I, too, feel like I don't eat much and should be losing more, but have decided to be happy it's coming off - and not going on! I'm probably getting 1000-1200 cal. per day and have lost 22 lbs.
Good luck!