My son is 2 years and 5 months old but not started to talk fluently... says appa Amma,akka n some more words...he follows what we saying but not trying to say it....what can we do further either to consult a doctor or not..?

Do u generally speak in more than 1 language? If its so then ur baby is confused between those languages......try to speak in 1 language in front of him.......another thing is ur child comfortable wid sign languages? Pls do not respond to his sign languages........if u r answering all his sign language then he will start talking lately