Is it considered a shortcoming not to visit graves except once after the father's death? Does the deceased feel that, and what are the recommended good deeds for him?

Visiting graves is recommended for men and is particularly emphasized for parents.

Among the ways to honor one's parents after their death are: supplicating for them, fulfilling their will and their pledges, maintaining kinship ties connected through them, and honoring their friends.

The Prophet, peace and blessings be upon him, said: "When the son of Adam dies, his deeds cease except for three: ... and a righteous child who supplicates for him."

And on the authority of Abu Usayd Al-Sa'idi, he said: A man asked the Prophet, peace and blessings be upon him: "Is there any way left for me to honor my parents after their death?" He said: "Yes, praying for them, seeking forgiveness for them, fulfilling their pledges after them, maintaining the ties of kinship that are only maintained through them, and honoring their friend."

And he, peace and blessings be upon him, said: "Indeed, the most virtuous act of honoring is for a man to maintain ties with the loved ones of his father after he has passed away."

Similarly, giving charity on behalf of the deceased and dedicating its reward to them reaches them by the consensus of scholars.

As for other acts of obedience, such as reciting the Quran, scholars have differed concerning them.

There is no specific number or time for visiting graves.