Why don’t you speak with anyone else? Is it fear of stuttering? I’ve done that before and if I’m being honest that’s what probably hurt my fluency more than anything. Just over the past year I’ve taken a job where I’m forced to talk pretty often and even though I may suffer through it or struggle in certain situations, overall my stutter just felt better by just forcing myself to talk more and practicing speaking. I’m not saying this will cure you or that it cured me but I think you’ll do more damage than not by shelling up and not talking to people