Your hunger will return anything between six months and a year out and it comes back with a vengeance. So you really have to make the lifestyle changes that will determine ultimate success or failure in that honeymoon golden period of the first nine months post op. That's why us old timers bang on about it so much as in the early days post op you think you'll never feel hungry again.
I ate healthily is all I can say really. Still protein first and reduced carbs, but I ate six small meals a day rather than the three gut busting extravaganzas I ate previously. The main thing for successful maintaining though is linking your intake to a healthy lifestyle. I joined a gym and trained six days a week. Three days cardio and three resistance. This was undoubtedly the key to my success. The more exercise you do the more you can eat and the better your body metabolizes the fuel.
There are those that say post op we never need to worry about dieting again. Indeed some NUTs will say never even mention the word diet post op just live your life normally. Well most normal people follow a diet. Not a rigorous 1000 calorie a day weigh everything diet, but they follow a diet of largely healthy eating non the less. The best advice I was ever given was post op remember you are on a diet for life, the surgery just takes away the grind from it is all. That is so true, we have to consider what we are eating and when for the rest of our lives, but unless we couple that to an effective exercise plan we will always struggle to maintain long term.