One method an actor or singer uses to remember lines or lyrics is to write them out longhand. There is most definitely a very powerful connection between actions of the hands and cognition. Sounds to me like you are using your above average intelligence to figure out what further PT you need without incurring expense. While you could pay out of pocket for more PT, you probably already know more about what you need to do to recover fully (and I believe you can do this) than any medical professional ever could.