My son is 3 year old.He is not yet start to speak fluently before and all he won't speak single wors except alphabets, numbers, colours from last one month only he started to ask his needs through single words not sentences,if we ask him to speak na he is repeating whatever we teach he is able to speak of his own and he keeps on blabbering some songs or repeating few words when he was idle kindly help me on this I am very much worried