The OP said the final grade would be a D. With a D, the OP should 100% expect Yale to send a letter asking for an explanation. And if they do not like the explanation, they will rescind or (best case) force a gap year.
The problem will not disappear; OP needs to get the grade up to a C. And how do they need 6 weeks to review for the AP exam with no assessments? Does not make sense.