A 4-year-old child weighing 38 lbs is prescribed amoxicillin for otitis media.
The order is for 345 mg orally every 12 hours.
The recommended safe dose range for amoxicillin is 80-90 mg/kg/day in two divided doses.
The available concentration is 400 mg/5 mL.
Which of the following is the most appropriate action for the nurse?