Hey, I can understand as a caretaker all these thoughts are valid, propal SR 40 is to manage side effects only such as Leg vibrations.
Do not worry, this is the part of the natural course of treatment.
First Goal is to control the symptoms with Least side effects.
Next Steps
Still, even if you feel that you have more doubts, you can reach out to your psychiatrist first or if not, then here also you can consult.