3 weeks before Mommy Makeover. Should I keep losing weight until then?

Losing weight is a bit hard on the body so it's a good idea to stabilize your weight before undergoing a procedure that is as physiologically significant as a mommy makeover.

Your weight loss is a good idea.  I would continue dieting and exercising until your surgery day.  Losing weight will improve your results and is great for your health.  Both will benefit you after surgery.  Best wishes for your procedure!

Losing weight before surgery is a good thing, so there is no reason to stop.  Equally important is to maintain your weight after surgery.  After your surgery you will actually gain weight which is due to water retention so don't let the discourage you in maintaining your results.  It can take a good month or more to lose that extra water weight.