Definitely contact me (click on this link or use the form below)! High-end STEM subjects, especially calculus and above, are my specialties. You are hitting the nail on the head in terms of the need for a plan. If the student is serious, that PLAN needs to start no later than early December. It is also very dependent on the mechanics of the AP class. Some classes and teachers are very well prepared and execute well in terms of prepping students for the test. Sometimes, that situation is not optimal. This what we need to assess and deal with together.
If the teaching of the AP test is NOT matching the skills needed for the test, then the teacher is the first place to start. AP is my specialty. We can put a plan together to fill in those gaps.