3) Instead of feeding them a nitrogen-heavy mix of nutrients for overall growth like you have been doing during the vegetative stage, youll be feeding your plants a more phosphorous and potassium-rich mixture of nutes that they need for bud and THC formation. Many growers continue to give their plants nitrogen during the flowering stage, but in decreasing amounts at the same time theyre increasing the phosphorous and potassium ratios. All nitrogen feeding should stop no less than 2 weeks prior to harvest.
Just a snippet from the "bible" I use... I'm not saying to rule out giving the plant some nitrogen... just that at your stage of flowering it is less of an issue...