my child is 2year 4month old he does not talk clearly. he says many words but it is unrecognisable. although he knows letter a to z, dances,mankes eye contact, sings rhymes twinkle twinkle etc says bye bye, understand signs not always but he does not have conversation with me or someone.like if he is hungry he crys he does not ask me to give food... I have a doubt wheather his speech is delay or not ???? if yes please suggest solutions...