I study at IITGn where the story is very different compared to old iits.
Competition is much lesser. I know u guys won't believe when I say that I study only before exams so I'll tell u the truth.
I studied only before exams.
Nothing more nothing less. I did do all my assignments on time tho (I mean, obviously, anyone would do it if it's graded.)
It gave me a cpi where I could migrate to any branch that I want (including CS). I took EE voluntarily.
IIT is quite chill. I have only 1 tip for u. Be very energetic in your first year. Explore every damn thing. Grab every opportunity u get for anything (not talking about acads here.), But study when it's necessary. Basically study such that u follow everything thats being taught in class.