hi my nephew 2.6 years ka hai wo only few words bolta hai it is normal

A. call the doctor if your child's speech is harder to understand than expected for their age: Parents and regular caregivers should understand about 50% of a child's speech at 2 years and 75% of it at 3 years. By 4 years old, a child should be mostly understood, even by people who don't know the child.