Leaf Yellow spotting issue

hey everyone, was wondering if you would be able to diagnose this issue going on with my plant, its the only one of the 5 strains i have to come across this problem, am thinking undernuted or overnuted on a certain nutrient, i currently only use organic fertilizers like sheep manure, ewc, gaia green products, guano, kelp meal..
any help on diagnosing and fixing the problem would be appreciated. couple weeks or less till flower hits for this girl

Might be leaf septoria.
view google images of cannabis leaf septoria.

that don't look like any fertilizer issue ive seen......

im thinking could possibly be that also, its odd, only some the plant up a few the branches are turning yellow and wilting, ive seen it previous years but thought would be low on a nute, have been trying to learn more on the plants wants to increase yeilds

i wasnt sure if it was fertilizer or not myself, didnt seem like it as its the only plant going unhealthy, i feed it 6.5ph natural spring fed lake water, same as all them, plant mustve caught some disease who knows? will get more pictures later or in the morning if needed