I’ve never found school speech therapy did anything. It taught me some basic things to speak if I’m stuck or something but i still stutter years after finishing elementary school. And I hate feeling like a hippy trying to spew this bullshit but a mention to your parents about CBD oil. My parents took some convincing because they’re somewhat “anti-weed” but it doesn’t get you high whatsoever and i think it has helped me tremendously. I’m not sure if it’s a placebo effect but I find my stutter is better when I take it