How should I respond to a height of 63 inches and a weight of 135 pounds in 5 months?

Patient's question:

5 months ago, weight 13.5 jin, height 63 cm

Doctor's answer:

The Kopp's index = [weight (grams) / (height in cm x height in cm)] x 10
When the Kopp's index is 22 or higher, it indicates that the child is overweight; 20–22 is slightly overweight; 18–20 is good; 15–18 is normal; 15–13 is underweight; 13–10 is malnutrition; and below 10 indicates severe malnutrition.
If the Kopp's index is 22 or higher or below 15, it may suggest problems with feeding methods, or it could be due to certain diseases. In such cases, it is advisable to consult a pediatrician.