He has been doing script readings and has been working on the physique required for the role since more than a month.
Now that he is shooting Shahid has been working on the film on and off set, dedicating almost 12 - 14 hours of his day prepping and shooting.
Infact the actor has also been keeping his cell phone at bay or even switched off for most part of the day.
Shahid has immersed himself in work.
It is an intense character he will be seen essaying in the film and he has been trying to give it his all.