[Karen Hart]

Okay, here is my suggestion.

You need some kind of anti-androgen to suppress Testosterone.
Something like, Saw Palmetto, Red Reishi Mushroom or White Peony.

Now, I know someone has convinced you that bio-identicals don't work, but that is not true. They work.

You need Estrogen and Progesterone, both.

Estrogen
https://www.amazon.com/HelloPharmacist-Natural-Bioidentical-Estrogen-Menopause/dp/B09ZBMJ14L/ref=sr_1_2_sspa?crid=3FODG54VPLG9C&keywords=bioidentical+estrogen+cream&qid=1703714935&sprefix=bioidentical+%2Caps%2C365&sr=8-2-spons&sp_csd=d2lkZ2V0TmFtZT1zcF9hdGY&psc=1

Progesterone -- This product yields 20mg/pump, a good dose but you can get 50 and 75mg products as well.
https://www.amazon.com/NOW-Solutions-Progesterone-Cream-3-Ounces/dp/B0013OXGNU/ref=sr_1_33?crid=2PSBUV3A1VU1R&keywords=bioidentical%2Bprogesterone%2Bcream&qid=1703715706&sprefix=bioidentical%2Bprogesterone%2Bcream%2Caps%2C370&sr=8-33&th=1

Grow as little or as much as you want. When you are happy, stop.
There is no way to predict a time frame... would 6 months to 2 years be okay?
It all depends on your metabolism and how consistent you are in doing this.
It's a slow process. You will not suddenly wake up one day with C-cup breasts, so relax.
You may lose some mass when you stop but be mentally prepared to have them for life.

BTW, I can totally relate to your story about wanting to stay single and free. I should never have gotten married.