I hope I'm allowed to post in here to add my own two cents to the matter, as someone who went through a male puberty myself about 14 years ago:
Basically, I wouldn't worry too much. In my own original male puberty, although puberty started somewhere near the end of 7th grade, when I was about 13 1/2 years old, I really didn't start getting much facial hair at all until I was almost 16, and even then I wasn't having to shave more than every week or so until I was in college. It's something that takes a while. I mean, look at high school sophomores and juniors, guys who are like 16-17 years old. They've all been going through puberty for a good 3 years or so, and yet how many of them do you see that can grow a beard or a mustache? In my entire high school, there was exactly ONE guy who had a beard. Not a single other guy I knew even attempted to grow one until college, because until then they just didn't have enough facial hair to do it, which is a good 5-6 years after puberty starts. So I wouldn't worry. It's a VERY gradual change. And if it takes that long in a lot of cis-males, you can probably expect much of the same time-frame wise.