I also had knowledges about some improving methods but yeah mosf of them are not effective. I tried accent exercise,saying words myself to myself,reading texts and so on. But yeah nothing worked. But after graduation from junior school,my stutter faded away itself,implausible to me and [others.](https://others.At)During that time,I gave up being reluctant to stuttering but as time flies,my stutter gone away. Since no neurologists or something said stutter is irreversible,plz don't give up.I also found when stutter premotions apppearing and stuttering,somatic responses highly resemble anxiety disorder's. So words that recommending taking anti-anxiety pills are kinda reasonable cuz it can reduce somatic responses. And u can try making a fist or use some forces to protrude your underbelly from inside. I found them resist somatic responses and I dunno others' feelings when trying them.