Second opinion please

[Yoespero]

I'm 17 and have been experiencing pretty aggressive hair loss for the past year. I started on regaine a couple of months ago for my receding hairline and have seen some regrowth and I'm just waiting on those hairs to thicken out. However , over the past month I've noticed that my hair is really thin all over, and its getting pretty hard to disguise. This has made me think whether it would be a good idea to shave my head and apply the regaine all over. I would just like to know from some of the more experienced guys here if they've tried it before or if you think it would work or not.
My thinking was that as I have had pretty good results on my hairline, my hair should grow in again as the regaine takes effect, disguising my hair loss.

Thanks in advance

Yoespero.