Best of luck for the upcoming presentation. Ive heard advertising your stutter makes it easy on both sides. You are not trying not to stutter and the audience understand and focus on what you have to say rather than how you say it . That what matter , right? I know this part can be hard . But once you inform people about that , they ll be patient and understand you. Ofcourse there will be people who’ll laugh at you or mock you, these are the people you should probably ignore. Other than that best of luck