Just putting in my 2cents here, hopefully this may help you the way it’s helped me. I stutter on certain words but fuuuuccccck introducing myself. I dreaded it. Now I still do but this little trick I do has helped tremendously: Exhale and quietly make a “h” sound like saying “heavy” just without the “eavy” part. It forces your throat to open and your next word should be more smooth. Hopes this helps if you feel it coming on! Seriously, try it and see!