hi my baby boy is three years active boy. he is speaking meaningful sentences mostly still unable to understand everything. he likes to run jumping dancing n almost every activity of household items. but the problem is he is not interested to identify ABcd letters. he can sing ABcd song or a for Apple etc. but can't identify one single letter. he says everything same. he can say almost all objects from book like fruits or animal etc but identification of letter n number is very impossible for him now. my mistake is I didn't show him abcd before.I have introduced abcd to him two month ago. so is it normal for him to identify ABcd letters or a problem m confused about it. please suggest how to make him interested about abcd to identify