Late flower leaf discoloration

Every other watering ? I would advise in the later stages if you wanna maximize your yield to feed whenenver the medium is dry its her telling you shes in diar need of nitrogen if you want to clear them yellow leaves up and get them back to green though looking at the maturity then its maybe worth waiting and feeding her. Have a look at fox farms feeding table that will give you a good idea of what to give your plants week by week for every week that way you can pretty much perfect the nutrients in all weeks maximize optimal growth through the plants life cycle :) Looking very sticky anyway pal great going and best of luck for whatever you decide to do :)