I’m someone who has presented a capstone project a while ago. I don’t know how you’d be able to spoof zoom but.... I recommend writing a word for word script for the presentation and practicing it aloud until you basically have it memorized. I am horrible with presentations but I ended up presenting my capstone with barely any stutter. Being able to practice it helps you remember when to breathe. The confidence of knowing how to says what’s next also helps greatly. I would also sometimes place slashes in my script to tell when I should take a breath.