I think your surgeon did a terrible job explaining this to you. Once you have gyno it’s there. The AI’s just reduce the swelling (size) come show time as most run higher amounts of them. As well, your bodyfat is lower so the excess fat that stores around the swelling comes down. It’s all just less noticeable.
But once you get it, it’s there. You can either reduce the swelling with AI’s and Tamoxifen or you can get it and the glands removed to ensure it doesn’t come back.
They do feathered lipo in the area to remove the fat that’s stored around it and as well to ensure enough is there to sit behind the nipples so that they don’t sink it given the glands are being removed.
I’m speaking on this as someone who just had the procedure done by a top surgeon who loves to explain shit to me a medical guy who loves to understand shit.