I had my closure in Sept 2013 and have lost 15 lbs so far. I just started by walking 5 mins each day and then built up to 30 minutes 4 times a week.
I also started eating more vegetables, brown rice, and more fruit.
Remember we're not going to lose our weight overnight or in a week or a month, because it didn't get there overnight or in a week or even a month. It just seems like it did. But you will loose it slowly.