My son is almost 4 year old. His height is more than 96cm, but weight is constant around 12.3 to 12.5 kg since last 7-8 months. Is there any way to increase his weight?

A. Hello mom not to worry if the child is active for her age and doing age appropriate activities and eating well and playful . Some kids grow on their age , and after the of one normally kids gain about 2 to 4 kgs yearly