pls help

pls help i start my senior year in two weeks and i’m terrified because i’m taking a public speaking class and i have such a bad stutter. it’s too late to get out of taking this class and im worried it’s gonna make my year so stressful. any advice/tips on how i can significantly improve my stutter in two weeks? tips like “slowing down” and “taking my time” don’t help me at all. i’ve never been to a speech therapist either but i doubt ill be able to make an appointment within two weeks. if anyone has helpful advice please lmk 😔