Thatโs very normal late in the budding stage and as the buds mature they pull all the energy out of the remaining leaves as the plant is nearing death! I wouldnโt worry! Just do some defoliation and get ready for your flush! You got no worries ๐
Sending you good vibes. Them are pretty girthy udz'. Hopefully your deficiency/discoloration was resolved. Hate seeing a beautifully grown plant in distress. All the best ๐