My 15 month 28 days baby boy is following commands like come here, showing gestures like raising hands indicating want to be picked up or when we leave towards main door, run behind to go along. When doing something exciting like climbing stairs or hiding under the blanket he looks at other persons reaction, makes eye contact & smile. No repetitive behaviour, just play like normal toddler with different toys and objects at home. He give smiles to nearest family or maids. His gross skills & fine motor skills are perfect. Just communication is the area of concern where he is just babbling, no pointing to his wants. Is this normal behaviour of 16 months old or something different???