I mainly stutter on my vowels (words that begin with Y, W, or I) and for my what helped the most, was doing this word substitution method. Its really hard to put into words but this is how I do it but ill try my best. A word i would stutter with the most is “you”. This word used to be the BANE of my existence because it would be so hard to say. I noticed that i would get stuck in the beginning y sound. It would be like yyyyyyyyyyyyou. What I did was that I used my stutter AS the word itself. Example: “yyyy know where to go?” That initial phonation sounds like the word itself you see. I know its not natural but jt sounds pretty natural with practice. Also I notice that once I’m able to “say” the word i was stuttering on, then sometimes i would be able to say the full word because I just struggle to say the inital letter of the word. After doing this for a while i noticed that my stutter was caused because my brain was forgetting to phonate or that I would lose control of my phonation while trying to talk so I would just prolong my words. For my consonants, I would just do easy onset/ prolongation, but the main thing i would focus on is my phonation. For example words like “because” would trip me over. I incorporated the technique i talked about earlier by sometimes not closing my lips all the way. Idk how well i explained this but if you have questions ill try my best to explain them! This didnt CURE my stutter but i noticed a tremendous improvement in my stutter ever since it started 6 yrs ago. I tried doing speech therapy and doing things like diaphragmatic breathing and talking slower but it didnt rlly work.