I understand this 100%, in 5thngrade I joined choir, singing has helped me out SO MUCH. For anyone else reading this the tempo method helps A LOT. Or metronome method. Listen to a metronome in your head and talk in rhythm. It taught me how to speak at a certain pace and it comes out naturally almost like your singing My singing is good ( gotta hype myself haha ) never really stuttered when I sing but after I'll revert back to myself haha but the good thing is that when we sing or speak were gonna grab attention, cause to go from someone with a stutter to someone with no issue is astonishing and I've made a lot of friends cause of it lol