Is there more to speech therapy than just “fluency”?

Is there more to speech therapy than just “fluency”? I stopped going to speech therapy when I was 16, I couldn’t really afford it anymore but my stutter was manageable to I was fine with it. Fast forward to now, I’m 18 and my stutter is getting progressively worse. I’m hesitant to go back to speech therapy because, from what I remember, it was literally just reading out loud and being told to “slow down”. My question is, now that I’m an adult (legally speaking at least) can I expect anything more, or would I be better finding my own methods? I’ve read that there’s a lot of aspects to stuttering, both physical and mental, but I don’t wanna waste my money if that’s just gonna be ignored.