As the nurse assigned to juan’s case, what is the most appropriate nursing intervention to address his malnutrition and promote nutritional rehabilitation ?

A 5-year-old child named Juan Aragon is brought to the pediatric clinic by his mother. Juan appears lethargic, with dry skin and brittle hair. His mother reports that Juan has been losing weight and has a poor appetite. Upon assessment, Juan’s weight is below the 5th percentile for his age, and he exhibits signs of muscle wasting and delayed growth.