As the nurse assessing baby juan, what nursing interventions would you prioritize to address the risk for delayed growth in this infant ?

Baby Juan Castillo is a 6-month-old infant brought to the pediatric clinic by his parents for a well-baby check-up. His parents express concerns about his slow weight gain and developmental milestones compared to other infants his age. Baby Juan appears alert and active but is below the expected weight percentile for his age.