Receding Hairline @ 17

[NeilArmstrong]

Hey guys, I'm only 17 and for about a year now I've started to notice that my hair has been insanely thin and limp.

For over a year I have watched as my frontal hairline has receded and I'm losing my temples/hair density all over.
After I take a shower I have to use a blow-drier on my hair or else it wont dry at all and will stay soaking wet.
Additionally, I've started to notice a lot of my hairs on my desks and textbooks when I'm studying, and when I scrub my hair in the shower I have hairs in between my fingers.

I've tried dropping conventional shampoos as I read the SLS and harmful chemicals in them can contribute to hairloss, and I replaced them with baking soda and vinegar, which hasn't done much except now I'm also starting to notice dandruff even after stopping the baking soda/vinegar shampoo.

I just recently went to a dermatologist who specializes in hair and he took close-up pictures of my scalp and hairline and wants me to come back in 6 months to see how things are. He told me that if I wanted I could try using Rogaine once a day until then and see if it's effective.

I've read everywhere the stories of shedding with Rogaine and it making things end up worse and I'm extremely scared and can't decide on whether to try it or not.
I'm only 17 and this has been devastating to me and is bringing my confidence way down.

What can you guys recommend and do you think that I should try Rogaine?

Thanks