Fellow stutter blocker here! (dunno what to call it). It is annoying, I relate to u in the way that no sound comes out and I force the words out. I’ve learned to take in an audible deeeep breath and allow the word to come out with ur audible breathing out, sort of like when you sigh and huff words out. It works for me, and I know the loud breathing sounds weird, but i think it’s better for me to do it instead of freezing up. Hope this helps