It certainly sounds like mixed signals. Everything I know about this condition is that it is pre-cancer. It also increases the risk of breast cancer, that could certainly account for the doctors wanting you to limit hormones. There is even someone on one of these support pages who mentioned taking endocrine therapy to further reduce hormones.
Here is a link to the page Mayo has about ADH.
https://www.mayoclinic.org/diseases-conditions/atypical-hyperplasia/symptoms-causes/syc-20369773#Overview
The horrible part of dealing with cancer (pre-cancer) is trying to second guess what it will or will not do in the future. Even a mastectomy is not fool proof. Even the radical mastectomies of the past were not fool proof.
Have you discussed this with the oncologist or just the surgeon?