I'm 7 days so far on Risperidone 0.5mg.

I'm 7 days so far on Risperidone 0.5mg. Hi guys. Hope you well. I'm currently 7 days on the Risnia Risperidone 0.5mg tabs. For those that have or is taking this for their stuttering, is it too early to expect any changes ? So far nothing in terms of speech improvement, just feeling sleepy 2 hours after taking it every day now. Does the speed of how it works depends on how critical the stuttering is or the dose amount ?