There is reason think so, at least for the moment.
Sad to say, Psychiatric meds cannot really fix anything, just ameliorate and prevent. But that is true of many meds. I do not think that our meds have anything to do with the underlying problems whether in the soul, in the genes, or in the wiring. As I am wont to say, a headache is not an aspirin deficiency disorder.
Our ability to control or prevent psychotic episodes is remarkable, but still the patient is never fully well. Quit the meds, and it can return.