So my first suggestions for every one the things is do that go to the therapist not anyone find someone who specialises in that field because most of the therapist have experience with kid's who late spoken but our and kid issue is totally different and those Technic whose work on kid's that doesn't work on us because kids are in learning state they learn things what they can see in there surrounding so it's easy to correct those problems of us those who already crossed these learning state and move really far far from that because those things are stored in our subconscious mind so even we know that is wrong and know the correct solution still we do the same mistake again and again. So if you can tell in detail so I can share soe of the suggestion which i got from my therapist because even we have same stammering issue but still treatment is different for everyone so that why it's doesn't matter how much you read books, suggestions and watch video you can't able to solve your problem.