Eh, this is quite normal lah at that age, ada babies yang shy dengan orang lain or prefer mak je, tapi kalau dia completely ignoring you bila panggil nama, boleh bagus jugak konsultasikan dengan paediatrician just to check hearing and development dia okay ke, especially if ada other signs. A few of my mum friends' kids were like this and it passed, tapi some benefited from exposure, buat activities together, let him see you interact dengan people dia kenal, and don't force it. Takpe, he'll warm up eventually, tapi check with the doctor jadi confirm semua good!