I guess I am one of the lucky ones who actually lose weight on prednisone. However, I have been off the prednisone for three weeks and NOW I am gaining weight. Go figure. I realize that I haven't been getting the exercise that I normally enjoy during the warmer months, so that may be the culprit. Have to start walking on the treadmill again.
Stick to a low carb, low calorie diet and exercise. That should do the trick.