Doing tarpanam (water libations) on the day of Amavasya is a well-known fact. My father was doing it very sincerely on all Amavasyas.
But now, since he became very old and has health issues, he is not able to do it. My question is, can I do it in place of my father?
I know that if one's father is alive, one should not do tarpanam. But in this case, the father is not able to do it for health reasons.