My son is 2.5 yrs old but he doesn't talk. He used to say some words I. E maa. Pa. Pa. Etc till 1.5 yrs. But after suffered from serious illness he left talking. And now he tells sometimes maa pa. Pa. Pa etc but not talk as normal as others. I went through his BERA test and found report normal. We consulted many doctors but no one diagnosed the reason and says that he will tell but it will take time. Being his father I am very anxious for his career. Please suggest me sir.