Harshavardhan on Tuesday shared a photograph of Anil and Apjit, where they are seen raising a toast.
"The reel and real life dads met and raised a toast to the start of this amazing project. Dad beat me to the meeting with Bindra senior and has already started his prep! Can't wait to be back and start work on this full swing!" Harshvardhan captioned the image.
Abhinav won the country's first individual gold medal at the 2008 Beijing Olympics.
The biopic is scheduled to go on floors by October and will reportedly focus on the relationship between Abhinav and his father.
Harshvardhan, 26, made his debut in Bollywood with Rakeysh Omprakash Mehra's "Mirzya". He is currently shooting for Vikramaditya Motwane's upcoming film "Bhavesh Joshi", which is expected to release later this year.