Ceraso  A, LIN  JJ, Schneider-Thoma  J, Siafis  S, Tardy  M, Komossa  K, Heres  S, Kissling  W, Davis  JM, Leucht  S. Maintenance treatment with antipsychotic drugs for schizophrenia. Cochrane Database of Systematic Reviews 2020, Issue 8. Art. No.: CD008016. DOI: 10.1002/14651858.CD008016.pub3

This systematic review confirms the clinical benefit of remaining on antipsychotic treatment vs. discontinuation for up to 2 years following the onset of first episode psychosis.

https://www.cochranelibrary.com/cdsr/doi/10.1002/14651858.CD008016.pub3/full