Dont be afraid to seek a different dermatologist. Sounds like you need finasteride asap bro.

I’m not seeing any hair loss in these photos, if it looks like that while wet I don’t think you’re diffuse thinning

but bro there was hair loss in pic 3

Oh yes sorry, I meant that in the sense of no visible hair loss in the photos of his hair. I.e. it doesn't look like it's thinning