Learning plateau
It could just be that your experiencing nothing more than a learning plateau that most students will experience during their training.
It is a long and arduous road. It could be that the student instructor relationship isn't ideal, and that's no reflection on the Instructor. Hopefully your instructor is a mentor and someone who motivates and inspires you. If that's an option perhaps chat to your instructor and/or CFI, to see if you can come up with a better match.
It could be that a change of instructor could reinvigorate the process.
Consider spending more time in the school. I know when I was training and shooting in and out of the school for lessons I didn't get the opportunity to fit into the company culture and environment as well as I did when I was there more intensively and able to share my experiences with staff and students.
Whatever you decide, all the best with it. Cheers. Glen.