Most likely, you'll lose weight steadily for the first 6 to 12 months after surgery. The most rapid weight loss often happens during the first 6 months after surgery. Most people lose over half their excess weight in the first year and a half. After that, you may gain a small amount of weight back. This is normal. Set realistic and meaningful goals for weight loss. Most likely, you won't reach your ideal weight. But you'll reach a healthier weight.