Ilang months nag show ng focus si baby?

Hi mommies, im quite confused and curious if how many months po ung baby nyo nung mag show sya ng signs of attention. Yung pag tntwag e nalingon na sya and alam n nya name nya? Na observe kse ng mother in law ko na ndi dw nagfofocus si baby pg tinatawag nila. Na-bother tuloy kme ng husband ko. Our baby is 8months old palang. Normal b yun? #advicepls #pleasehelp