The answer to this is very simple. There is no need to call AMCAS, or to cross your fingers. They are actually very particular about their rules, and do not make exceptions. Last year, someone mistakenly withdrew their application to make a minor change, and only later discovered that once you withdraw, you are done for the cycle. And, that was it. Their cycle was over, just like that. No exception.
So, the question is, have you already submitted? If not, you are fine and can just delete the duplicate entries. If so, you ignored
@Moko's advice about not rushing to be in on 5/27, and, unfortunately, are now SOL.
From the 2022 AMCAS Applicant Guide: "After the initial submission of your AMCAS application,
letter entries may not be deleted; instead, they may be designated as “No Longer Being Sent.” This can only be completed if the letter has not been received by AMCAS. Log in to your application and go to the Letters of Evaluation section to make the designation." THIS is what they are going to tell you when you call tomorrow, assuming you have already submitted. Good luck, and please report back tomorrow so hopefully someone else can benefit from your experience.