I took 100mg 5 htp. Wasn t really effective.

You listed it up very well what I need. An SSRI/SSNRI for depression and anxiety and something to assist my sleep. This gabapentin sounds great. I always had the feeling that I cant let go and something keeps me awake. Some people had also success with melatonine.
I think I will stop taking these anti psychotics and benzos. Dont feel comfortable taking them

And yes, I have regular speech therapy