When I was in high school I couldn't say my name (stuttered horrendously) In front of my whole class and got absolutely abused for it and bullied for along time...it was hands down 1 of the most traumatic experiences for me as a youngster. My advice is Take something like a supplement or anxiety medication to calm you down as much as possible. I think with most stutterers & me in general it's all mental. I Couldn't introduce myself because I expected to get blocked. I assume a anti anxiety med would help with the nerves. You may not be as severe stutterer as I am, so something to take the edge off might make you 100% fluent. Even Today I avoid big introductions like that to be honest, I've told teachers or bosses or whatever before hand that I absolutely cant do a public speech/introduction like that 😂 it's not possible...but its weird that sometimes I could talk infront of alot of people fluently and sometimes I couldn't get a word out. This has to be 99% mental. If you believe you will be fluent and find a way to stay calm you will do great.