The Zindagi Na Milegi Dobara star is making a video montage for his father featuring messages from family and friends in the film fraternity, Masala reports.
The source stated further: "He's been contacting all the people that his father has worked with till date: veteran actors, directors, producers, music composers, technicians, and has even set up days to meet his father's contemporaries like Rekha, Jeetendra, Randhir Kapoor and Rishi Kapoor."
A friend close to the family said: "Hrithik is very close to his dad and he will surely be touched with this video."
The father-son team are currently on location shooting Krrish 3.
Krissh 3 also stars Kangana Ranaut and Vivek Oberoi, who plays a super-villain in the sci- fi sequel.