Sean's "hearing age"

Sean has made amazing progress in his ability to repeat words and familiar phrases.  We often refer to him as a parrot!  It's exciting to see how good his articulation is, but at the same time we are noticing that Sean is not truly processing the words and sounds he is hearing.  We must remind ourselves that he is only "3 months" old as far as "hearing" goes and how many 3 months old to you know that are processing speech and language?!!  lol.  Just when we get a little nervous about Sean's ability to process speech and language, we reminder ourselves that is still very young, when you consider his "hearing age."