The movie is scheduled for release on Diwali (Nov 3) this year.
"Starting from the first week of October, Hrithik will take a month's break to market the film, right until its release in the first week of November.
"The idea is to reach out to as many fans as possible during that time, because Rakeshji (director Rakesh Roshan) hasn't started any kind of promotional activity yet. Even Hrithik has been off the media's radar for a while now, since his last release 'Agneepath' was over a year ago," said an insider.
As part of the global promotion of the film, Hrithik is likely to travel to places like Dubai, Canada, Britain and the US.
"Since he needs to promote the film in India as well as internationally, he will require time for the same," the source added.
"Krrish 3" will take forward the story of the superhero, played by Hrithik, seen in "Koi... Mil Gaya" and "Krrish".
Hrithik is currently busy shooting for Siddharth Anand's "Bang Bang" with Katrina Kaif. He is also teaming up once again with his "Agneepath" director, Karan Malhotra, for "Shuddhi".