At 3 months post-op, I was taking in about 1000 calories per day. (For reference, though, I am a 41 year old man, 6"0" and around 250 at that time). I have followed a low carb/highish protein/high healthy fat way of eating all along (pre-op diet program, through the food stages, and now). So, I eat around 100-120 grams of protein per day, less than 20 carbs per day, and probably around 100 grams of fat per day.
At nearly 6 months post-op, I eat between 1100-1200 calories per day. I weigh 215 now, so that number is still working for me. I don't imagine it will get much higher during my weight loss phase. I have about 35 pounds until goal.