Consider contacting your professors and letting them know that you have a stutter in advance so they don't cut you off! Having that added stress of being potentially cut off will probably make things worse (speaking from experience - I hate when they do that!) It's such annoying advice to get from fluent people, but I do find that slowing down and taking a pause when I'm finding I'm stuttering loads is helpful. It doesn't always stop me stuttering, but it at least gives me a moment to try and calm down/stop myself panicking. Hope this helps! Good luck with the presentation, you're going to smash it!