patchy new growth

Your even lower leaves says she is a sensitive to feed, slow down, she will love it in flower or never in her life. That type of girls requires half dose of rest and you just have to accept it. Unless you bombarded her from start. In both ways good pH and 3 full cycles should bring her back. Water, full dry, water, full dry, water, full dry, then half dose of current feed schedule dose. She will be ok by then. Love her and she will give you reason why .... All the Best !!!