Final answer:
The next step using the Teach Back method is for the patient to repeat in their own words what the healthcare provider explained regarding diabetes management and treatment.
Step-by-step explanation:
After explaining the condition of diabetes mellitus as well as proposed lifestyle changes and treatments, the physician uses the Teach Back method. At this stage, the next step is to require the patient to repeat what the healthcare provider said in their own words. This method ensures that the patient has understood the information about diabetes management and treatment, which may include exercise, weight loss, healthy diet, and possibly medication or insulin injections depending on the severity of the condition.