So I can say it's definitely possible to get rid of stuttering, one of my friends used to stutter badly but kept working on it and it's went away. I'm a stutturer myself, noticed that the more I read the less I stutter also what helps me I do tongue twisters in the mornings for 5-10 min then I'd talk about anything for 10 min just random things, maybe describe something but do it loud, clear with confident voice. It's not perfect yet but it definitely helps me ana I stutter less throughout the day.