WTF - fan leaf bullshit

My fan leaves are falling off...one by one. It seems like everytime I yank one the next one immediatly starts to turn yellow and die. So I left these on here to hopefully prolong the death of main fan leaves. Each branch has a main fan leaf ..and it seems that those are the only leaves that seem to be having a problem.

Is this nutrient burn??...which I don't think so because it would probably be affecting more leaves than specificly the fan leaves.

So.....would this be nitrogen deficiency. This is my first grow so i'm still learning.
-Should I piss in my plant? i mean fuck. i will if i have to. I got two weeks before flowering and I don't want my next set of fan leaves above those to start turning yellow and falling off.

1. Does not having the fan leaves for each main branch directly affect the branches ability to develop?
2. whats my quick fix? I've already plucked 2 big ones and now i'm guna have to yank these two. Its starting at the bottom and going up to each major leaf.

-plz help.. someone who knows or has had experience with this bullshit
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the third pix looks pretty healthy, and it is pretty common for the older fan leaves to fade and die.. it's just part of the natural life of the plant.. saying that though, i see some sort of spotting going on in the first two pix that also looks like some sort of deficiency.. not sure which..