Look, in Maths, there are no direct formula based questions, but just open the Jee Main paper, select the 10 easiest question in that paper in Maths, and those types of questions are there throughout in Bitsat. Anyone who has practiced previous years Main questions(recent ones) and who has grip over NCERT, will be able to do great provided he doesnt fail on the D Day( the pressure or the health).
I am sure many people here will do great( including me ), just be positive, dont doubt yourself. Be confident, not overconfident.
I did attempt bonus questions last year( made 20 guesses), I regret that, a guy who scored 330 told me it is necessary to attempt bonus to get good marks. But I will tell you, it is not, dont attempt bonuses if you have more than 10 questions and less than 20 minutes.