Flowering a plant of unknown seed origin. Plant started in 2 gallon pot. Plant is about 5 ft tall. Vegged for 30 days 24hr photo period. Now flowering for 60 days. A few lower leaves turnig very yellow. Buds are thin and whispy and long. Feeding Fox Farm Big Bloom. At this point should I possibly try a transplant or just let it go?? OR is this even a root problem???Or is this normal?