hi doctor mere sis ka baby 5 years ka hai per wo abhi tak baat nhi kar raha hai koi cheez ko response nhi dey raha hai mere sis ka baby 3 years tak baat karta tha jaise mumma baba sister game aise normal words use karne aata tha or emotions ko bata ta tha per aab wo na emotions batata hai or na he baat karta hai or na he kisi ki baat ka jawab deta hai yaha tak k wo eye contact bhi nhi karta hai apni he dhun mai rahata hai khana pena sab apni se ek dam neat kar leta washroom sab apni se use karta bath khud se leta bus baat nhi kar raha hai plz bataye na kya kari