Hi my baby is 6.5 months old she is very active my concern is she is responding sudden sounds only and when am continously playing any sound she is not responding sometimes and she is not responding her name also, other milestones are normal she is sitting with support and standing with support roll over from back to tummy and tummy to back... When can she respond her name in which month she recognizes her name... Is this normal or not... In how many months she will recognize her name plz tel me