Noogleberry Breast Pump
You are welcome!
Whether it is permanent or not is up for debate (their site says it is eventually) but I will say it definitely helps noticeably when paired with hormones

It's always a great way to visibly see your growth. As each day passes you will see your breasts fill the cups of the pump more and more to keep you motivated!
they say to regularly massage to stimulate growth, this is a great way
Follow the instructions though and dont damage. 10-20 minutes 1-3 times a day is great, no need to make them turn purple or over pump. Stimulate is the key word, and you will feel it with just a couple pumps
Outside of that you said you are on T blockers, estrogen + progesterone so it sounds like you are right where you want to be if your dosages are good per your doctor. Pump, massage and always moisturize!