hello experts. my son is 21 months old now .he is able to pronounce the letters or words since 17 months ..through out the day he is speaking randomly.but the problem is he is unable to arrange the word properly.sounds looks like meaningless. ex.-suppose a sentence-cow gives us milk , he is telling like ' woc vigse kil. ' I am reading the rhymes book,alphabets book infront of him regularly, I have increased conversations with him .I pronounce the words infront him very slowly and clearly . so I would like to know to you all what else I can do ?? should I wait more ? automatically it will be okay ??