I have not had FF for a while now. Ever since I mentioned it here. I think it’s gone completely now. Probably just minor fibrosis for me. I haven’t done anything to fix it so I can’t help you at all guys.
I think you first need to try the simplest things. Your sitting posture and positions, some local stretching and massaging. Also watch the underwear you’re wearing - it can have various effects on the flaccid. Lay off any form of PE for a while. If this doesn’t work, don’t bother coming to the forum too much. Make a trip to the best urologists in US and let them decide. Your time and effort will be much better spent then speculating on a forum. Use the forum just for contact.