I feel the pain. Every trick works different for everyone, so I only speak for myself. I gave a presentation this week with no video, and yeah, it could have gone better, I didn’t really give a good answer to two questions because of my stutter, but it is over and it wasn’t all bad. So what I did was to rock back and forth and throwing a lot of ammmm emmmm since it’s the consonants I most struggle with. And I know it might not help but I think everyone is not as invested as they were offline, plus some of them will probably figure there were possible technical problems. You’ll do good. The fact that you are giving a presentation is already very good :) Take a breath and go for it