Nerub-ar finery

Hello guys, im looking for some insight into an issue im having. im seeing people are getting there 7% buff this week and im still at 5%. I see that the currency for the buff has catch up and drops only off ONLY each unique kill of every raid boss regardless of difficulty. im 15/16 nerub-ar finery and have killed 8/8 today, so am i just permanently behind now? thank you.

Edit: also no i dont have any of the currency on alts only on my pve toon.

Not permanently behind because there is some catch up mechanics plus you can get two from a boss (random chance). I managed to get all my 8 for this week and I had only killed 7 bosses at the time.

You will just be a week behind for now.