My 2 years 9 month girl baby, just started to speak. she started by (2 years, 8 months)April month only. she is telling 1-10 and A-z and some words. But she is not responding if we call her by name. she is hearing everything and responding if we shout and all. should I concern anything here. my pediatrician said, she is having good vocal. just speak with her that would be enough.