Has anyone been on or started a podcast?

Has anyone been on or started a podcast? I have a really big opportunity to be on a popular podcast but I am absolutely frozen in fear because it’s a live show. Do I preface the show with disclosing my speech impediment or just roll with it? I’m leaning towards prefacing but my anxiety is just through the goddamn roof and I’m having a hard time even reaching out to schedule it. Anyone here have similar experiences or advice? Love you all