Should I stop lactating before breast augmentation?

This is generally recommended. Once you’ve stopped lactating, the breasts can change in shape and if you’ve gotten surgery, your results may be negatively affected.

I would agree with your plastic surgeon. Operating on breasts that are lactating can lead to development of complications such as galactoceles or cysts filled with milk.

Aside from the fact that medications can pass into your milk from anesthesia and pain management, in order to get the size and shape right, you want the milk ducts back to baseline. I agree with what you have been told, but I usually wait 3 months