Whoop, yay for 2nd puberty! I'm not on T yet, but when I had terrible acne as a teenager, apple cider vinegar really helped calm it down. I diluted normal apple cider vinegar with water and sweeped it over my face with a cotton wool pad and let it dry. Did this twice a day and it really helped stop the oil.
If you go to the doctors they can prescribe antibiotics for acne, which when used in combination with a hydrogen peroxide cream can be really effective.
Congrats on starting T though!