An LPN is caring for a patient receiving long-acting morphine for chronic pain. The patient has been stable on the medication, but today your CNA -reports that when taking the vitals of the patient they were harder to awaken and falling to sleep easily. The blood pressure taken this morning is a few points lower than usual at 112/70 mmHg, heart rate is at 69 and respirations are 12 breaths per minute per the report. You have entered the room and have to call the patient a number of times and shake their arm to get them to awaken. They are slow to answer questions and fall back to sleep when left alone. You have rechecked the vitals and nothing has changed. What is your priority action at this point?