Like mentioned above…I’d remove all the light starved lowers so the plant can redirect that energy up top(removing the fluff will produce bigger better top buds) and maybe go to once a week foliar spraying.
Overall plant health looks good but hard to tell without a full plant picture. Looks to be close to the limit of N with the ultra dark green leaves…keep in mind most Cal-Mag has about 30% N in it!
Be well
Brian(Alaskagrown)