A 62-year-old man with bipolar I disorder is brought to the outpatient psychiatric clinic by his adult daughter during an acute manic episode. He is grandiose, pressured in speech, and sleeping only 2 hours per night. The PMHNP recommends restarting lithium, which the patient previously discontinued against medical advice. The patient refuses lithium, stating, 'Lithium dulls my creativity and I don't need it — I've never felt better in my life.' His daughter insists the PMHNP prescribe lithium. Which of the following is the most appropriate approach to informed consent in this situation?