A 36-year-old man with schizophrenia attends with his sister after stopping risperidone. He hears a voice commenting on his actions but is calm, has no thoughts of harming himself or anyone else, and is willing to discuss treatment. He accurately describes the likely benefits and adverse effects of risperidone and clozapine, explains that relapse could lead to hospitalisation, and consistently chooses to decline medication. Which one of the following is the most appropriate next step?