Take him to visit Someshwar Mahadev Mandir near Nasik and let him have his bath in the Gauthami river for a few days (7 to 14) days. Also let him visit Shri Trimbakeshwar Shiv Jyotirlinga once or twice during this period.
All the planets in his horoscope are malefics except Mars and he will be running Mars Antardasa in Rahu Mahadasa from April 2020. Before that he should do the pilgrimage suggested.