A nurse is providing teaching for a client who is 2 weeks postpartum and has mastitis. Which of the following instructions should the nurse include in the teaching?

Feed your baby only from the unaffected breast until the infection has resolved.

Pump your breasts and discard the milk until the infection has resolved.

Apply moist heat to the affected breast.

Ensure you are drinking at least 1,500 milliliters of fluid per day.