I had my surgery on December 13. A couple of weeks after, my weight loss slowed down and then stopped. I thought it was just a plateau (I was still losing inches), but when I started charting what I was eating, I realized I was eating too many calories and carbohydrates. I was told the eating rule of thumb for the first 1-2 years after surgery is:
600-800 calories/day
70g of protein/day
No more than 40g of carbohydrates/day
When I began to stick to those guidelines, I started losing big time. You should be able to increase to 1000-1200 calories/day when you get to the maintenance stage. I hope that helps.