He s not responding or listening much when to expect that. He s 70 days old

70 days old will not respond immediately, keep talking to him.

The baby is too small dear ...keep talking and aging with the baby ..gradually he will start responding ...the senses are still developing..

Please give time I felt my boy was late compared to my daughter, I was worried too on completion of 3months u ll notice lot of changes.

Boys will be little late in talking skills when compared to girls. Better wait for another 10 days to check with your paed.