Teenager - Am I getting MPB or just developing a mature hairline?

[zachary]

Hi, as the thumbnails suggest I'm quite young, only in my mid teens. My brother whom is 19 has recently started getting very mild MPB and I am worried about myself, as I have always had a far-back hairline above my temples, but I feel it has receded more-so.
I have always had incredibly thick hair, the hair on the sides of my head is shaven to a No. 1 but looks a 2, or 3, and my brother has always had extremely thin hair, compared to me.
My father is bald but nobody on my mothers side is. What do you guys think? Thank you!

[zachary]

I've done some research, and I think that it might be due to traction allopecia. I always keep my hair in a very tight man bun when I sleep, do you guys think this could be the cause? I've been doing this for around 3 months, will it still regrow at this point if I stop?