Did this just develop for you? Or are you just getting fed up with it? Genuinely you have to learn how your stutter works and the only way you can do that is with time and focusing on learning it. in what moments do you stutter more or less, do you stutter when you talk to yourself? what effects do lack of sleep or plenty of sleep do for your stutter. if your going through a day or section of days where its better try snd think of anything different that could cause the improvement and same with the opposite. you will also gain more fluency and just feel better about yourself if you just say "fuck it" and learn to not care about what anyone else thinks about your stutter because worrying about what other people think will just cause you to stutter more. I'm not saying i cured my stutter like this but I'm learning a path to fluency and I'm way happier with my speech now than compared to when i was a kid.