my son is 7 months 8 days old his weight is 7.1kg and height is 65 cm. his birth weight is 2.6kg. I am worried if he is very small?

A. Namaste Mom A full term baby is expected to almost double their birth weight by age of 4 to 6 months and by age of 1 it triples give the baby now semi solid and mashed foods and alter with your feed