my baby is almost 4.5 month but he still don't react when we call him and when he don't react on any sound. we have done his ear test also it was all correct but den too he don't react

A. Okay so try this thing that just clap almost close to the ear of the child not very loudly but in a way that your child can hear it and react you can also snap that’s also something that you can do you can do some singing rhyming poem with your child so with music also sometimes kids react you can put music on the phone rhyme or a lullaby and see if you get a reaction from the child