Lowkey I think the reason why speech therapy never works for most people is in part due to them not giving a fair shake and continuously practicing the techniques solo and in gradually difficult speaking situations. If you've been at it for at least 18 months and not seeing any improvements then yea I think it's time to move on. Also here's some techniques that have worked for me that you can try, specifically added a mmmmm sound or nnnnn sound or ng (as in the last part of 'sing') sound to the beginning of a blocked word and use it maintain phonation while transitioning to the blocked plosive sound: [https://claude.ai/public/artifacts/cd05b5ae-6844-42df-a660-cf64c93bcaa3](https://claude.ai/public/artifacts/cd05b5ae-6844-42df-a660-cf64c93bcaa3)