The LSD trip is, strictly speaking, psychosis in itself. So the result is a person with two psychoses. Once, at the dawn of psychiatry, individual scientists believed that one psychosis could be extinguished by another as two waves in antiphase. But no scientific evidence for this idea was found. Rather, all psychosis will simply sparkle with "new colors", at best - nothing will happen.
The psychosis will intensify and continue ... Or, paradoxically, it may decline, due to a sharp change in attitude. In general, LSD in itself provokes psychosis, so I would not risk with such experiments. Here with other psychoses. diseases can help, or not give a negative effect, at least. For depression, for example.