First, "feedback" that says “do more structuring”, is not feedback. I am sure that only a peer can give such a suggestion, Coaches for sure don't.
Second, tracking is just journaling what you've done and people told you is just useless.
My suggestion here is to track the cases, track what you didn't do well over the case (on the business, on the structure, on the communication) and then for every single case review the case in-depth several times.
If your structuring is not good, doing a lot of structuring is just pointless. You have to understand why you are wrong. Probably you are not MECE, you are not solving the right problem, you don't think backward, etc.
So, start with your cases where you had difficulties and then think about them several times.
If you want to raise the threshold, just schedule an appointment with a coach here on PrepLounge; training with peers is like trying to learn to play piano professionally while training with people who are learning solfège.