I wish I only had to shave my BACK once a month!
Nothing is going to increase your DHT except DHT. Try another doctor. It seems to me that DHT cream applied topically to the area where you want hair growth would be the thing to do.
FYI, I believe Beastdrol is a methylated version of Masteron, another DHT derivative. Its very effective for muscle growth, but because its 17aa I wouldn't recommend taking it to grow a beard.