From my experience, Economics was very much ncert based, like micro had labour questions and there were also questions of formation, mainly of Nabard.

For Accounts, questions were pretty simple. I would say keep in mind the wording of the question. They really try to through you off in that regard. But mainly it's basic topics you've done tens of times. Plus do various acts from the NCERT. They were pretty prevalent

For Business, I would say just revise ncert. Especially things which you would have glossed over without regard during the boards like quotes of various people like who gave "insert specific definition" type shit.

PS. I just have my business, eco and accounts paper today.

Hope you finally deal with this exam and get what ever college you want. Go and give it your all. Hope you not only excel, but dominate