Request the material in advance and practice the best places to Stop and Breathe. Actually *do make room* for dramatic pauses. You oughtta speak line per line, making the punctuation really stand out - do it slowly instead of just trying to read it as fast as you can. If you have a map of where in the text you can pause, you can breathe, you can add an Hmmmm, you will be prepared. If you know a word or a sound specifically will make you go off, see about a workaround. BREATHE. If you are someone who usually tries to be quiet and speak softly, I’d say do the opposite - if you try to speak louder, you end up breathing in more air which helps. If you go about taking any drinks/medicine for it, just be responsible and don’t overdo it cause you want to at least look sober during this reading. That being said, does your cousin know you stutter? Cause you could reach out and get out of reading duty if you feel like - it’s okay.