A nurse is caring for a 28-year-old patient who has been diagnosed with schizophrenia. The patient is experiencing auditory hallucinations, stating that they hear voices telling them to perform certain actions. During the assessment, the nurse observes that the patient is confused and occasionally looks towards an imaginary figure. The treatment plan includes antipsychotic medication, therapy, and involvement in group sessions.

Which intervention should the nurse prioritize when planning care for this patient to ensure safety and effective management of symptoms?