My father is gone, but he can't be resurrected. The living will continue to live. Infinite nostalgia will affect your health. You should turn grief into strength, fulfill your father's wishes, take good care of your mother and family, gradually get out of the grief of losing your father and start a new life.
The old man suggests that you burn more paper and mingbi in front of your father's grave or on the roadside of your home tonight (July 15) as a memorial to your father. Your father will hear what you said to him, which may make you feel better!