Should I add N?

I have about 7 to 10 days left till I chop.

let it ride bro, 10 days isnt long and your buds are basically done, from what i understand, some of the shade leaves die near the maturation time of the plant

no! it is normal for your leaves to yellow towards the end of flowering! if you add n right now you will taste it when you smoke it. I would say if that is all the yellowing you have I would say it is about right or just a bit too much N!