My son weight and height not increasing since 1 year... i can see weight around 12.3 - 12.6kgs height - 90cm my son age : 3.1 years May i know the reason why he is not growing?

A. hello Mom first of all it is hereditary and second thing is it depends on the overall growth and development of the child and the third thing is it is not mandatory that child will keep on growing every year so this is a slow process make sure he is having healthy diet and he is physically active