Please don't feel guilty about the speech therapy, I have gone to speech therapy for over 3 years(I was 12-16 back then, and where I live it is free for minors), until giving up on speech therapy, which somehow helped(?) Because I got 3 more free hours per week which really relieved a lot of stress among things like school, what has helped me a bit (I think, there are probably more factors that I didn't think about) is listening to podcasts.