How to convince my counselor to change my course

So my school opened a form to request a course change for next year and it closed earlier today before I submitted my request. I want to change my elective from human body systems to AP csp because I realized I want to continue on the computer science pathways I'm on and I really DON'T want to get involved in medicine. My counselor previously sent an email that no course changes will be accepted after the form closes. Is there anything I can say to my counselor to get her to change my course still? Do y'all have any tips like how to convince her?? I might just be cooked because I really want to major in computer science...