I lost facial hair, please help

Hey, soon to be 1 year on T in 2 weeks, and ive noticed i lost facial hair. I have a teen mustache, (and i feel like its getting thinner) but all the hair under my bottom lip (i used to have a good amount) are all gone, i dont know what happened, i didnt shave or anything they just vanished, i too didnt think it was possible. I talked to my sister recently and she asked me « did you shave? » because she also noticed that. I wonder if its related to the fact that my T level were high and maybe they converted back to O? (I know body hair cant just go back like that, but its the only thing i could potentially see where its coming from) i had bad acne (see on my profile) cuz my T dosage were high (still in normal ranges tho) so few days ago we decided to lower it, any explanation on why its happening? Its making me sad and dysphoric. (The gross neckbeard i was starting to grow and that were full of black and thick hair stopped completely growing from the past two-three months, same correlation of the acne apparition)