2-3 months after a FUE, I began using a Boar Bristle Brush to help absorption of topicals. Did I mess up?

If it does not look random now, it probably will not look random later.  It is best to address your concern with your doctor.

It is best to contact your doctor about post operative care and instructions since each doctor has a different regimen.  You do not need special shampoos after surgery.

It may take six to twelve months to appreciate the results of a hair transplant surgery.  If you are concerned it is best to contact your doctor.PRP is not necessary after surgery.

Finasteride has side effects. İt can cause problems with sex life but as soon as you quit taking it the side effects will go away as well.

Its very unlikely that you had 7,000 hairs transplanted.  Usually its counted by grafts that are transplanted, and 1 graft typically has between 1-4 hairs.  I'd highly recommend patients to use common sense when given these outrageous and unreal graft counts.  Although my answer isn't po...

This is normal for 2 weeks post operation. It is normal to have skin color change for a shoert period after FUE. You can use a scar healing lotion if you want it to heal faster.