Omg I do that too! Sometimes I’ll just have to blurt something out and didn’t mean to be so loud. Especially over the phone. But hmm, I’ll have to try that out. I’m 23 and in the past couple years I usually stutter, pause mid sentence and say “oh, btw I have a stutter” and then carry on. The person I’m talking to will usually brush it off like I’m just a regular speaker. So it helps. It’s weird. It’s like no one has never made a mockery of me irl, but the fear that it could happen is palpable when speaking.