At this stage you wont fight nitrogene deciency for the hole plant as it needs phosphorus and potassium the most.
Maybe you could spray only the specific leafs, especially the bottom, with some available nitrogene.
Take care only to spray the leafs, not the buds. This might repair the defiencies specifically targeted only in them, not the buds.
If you feed with nitrogene now they build up more leafs in the buds, thats usually what we dont want, as it makes your buds greener with more chlorophyll.
I dont see fungal infection, but some leaf-chlorosis. That is feed to potential fungus if it continues... right, take care! Remoove the bad leafs. Usually the plant gives it away easy, they fell easy off when moved, weakened... take those off. They are not greatly aiding the growth whatsoever that extremely damaged (some I see, not much).
pic1: OK
pic2: remove that leaf ... this could be THRIPS... the shining silvery sluggish, or mildew, i dont know... CHECK deeper
pic3: remove only that bad leaf-finger with a scissor, (or "clean" fingernails clip
![Wink ;) ;)](/styles/smilies/icon_wink.gif)
)
pic4: i see one or two deeply yellowed, take only those.
pic5: OK
pic6: i guess i see the leaf from pic2 barely behind front bud, that i would take off.
pic7: OK, just a chlorosis spot... take the leaf only if the spot "grows"
pic8: its simply the same picture than pic4, look carefully
![Wink ;) ;)](/styles/smilies/icon_wink.gif)
pic9: i see at least one leaf that i would pic... btw its pic 6 again... just the same pic.
Its not that like little chloris is big danger... you should not kill the hole leaf for some spots while it still is healthy and operates good. But keep an eye on it, if the spots seem to "live" and keep "growing" thats a fungus infesting, sure take it.
Any other maybe try some nitrogene solution carefully spraying at their stomatas. But imnot sure it really is nitrogene defiency, so I dont recommend that just like that!