What all can I do to take good care of my wife post-partum in terms of diet, mage, exercise, etc?

That is so nice that you want to take good care of her. I don't think most husbands think about this stuff, well mine did. But anyways...Just make sure she eats, I wasn't really eating at all bc I had no appetite and I kept forgetting to eat. Make sure she eats healthy foods, but maybe something bland bc after surgery she may be nauseas if she is on pain killers. make sure she rests because after surgery you need a lot of recovery, so that means helping with feedings if she is bottle feeding. I don't know what kind of mage is good, I've had 3 surgeries, but none of them were C-section, and I really didn't want to be touched at all. Any movement at all hurt! I am not sure about the knee issues or menopause. As for losing weight, that will happen when she is ready. I'd wait until the doctor gives to okay on exercising.