After soloing in 3 hours, (previous gliding experience), my landings deteriorated. My instructor chopped the lesson, saying he could do nothing, and passed me to a more experienced instructor, who identified my problem, and gave me instructions to fix it. I was back with the original Instructor that afternoon.
What you need is an instructor who can figure out your problem, and give you instructions to fix it.
(30 hour PPL course on DH82 Jackeroo variant at Thruxton in 1964)