Hi...
I found and still do that I don't get hungry, more cravings. But immediately post op, I just stuck to my three small pureed meals and I would say I'd get more of a discomfort feeling more one I'd had enough, almost like I'd have a mouthful and knew that if I swallowed it was going to come right back up.
I also follow a 20 rule:
* 20p (UK) / quarter size (US) size piece of food
* chew 20 times
* Wait 20 seconds before your next piece
* Stop eating after 20 minutes
I never got as far as the 20 minutes, but thought that this was good advice from my dietician.