Hi

Yes ,you can definitely appear in JEE main  next year i. e 2022 even if you are doing BBA provided you fulfill its eligibility criteria and  if you manage to get a seat in NIT then you can definitely leave the college from which you are pursuing your BBA and can join NIT

For your reference,

Jee main eligibility criteria is given below-

--------) Qualification required :- to be eligible  for JEE mains you need 10+2/equivalent qualification.

--------) Passing year :- one is eligible for JEE main examination for consecutive three years starting from the year of appearing for 12th /equivalent examination i. e to be eligible  for JEE mains 2022 you should be either appearing for 12th board exam or equivalent in 2022 or should have passed it in 2021 or 2020

--------) There is no age limit to be eligible

--------) there is no minimum percentage requirement to be eligible for JEE Main.

But yes,

To be eligible for NITs, IIITs, CFTIs one needs at least 75% marks in class 12th if belongs to General or OBC category  or at least 65% marks in class 12th if belongs to Sc or St category. For only this year i. e 2021 this minimum percentage requirement of 75% - 65 % was lifted off.

For detailed information about jee main eligibility criteria  go through our page, the link for which is provided below

https://engineering.careers360.com/articles/jee-main-eligibility-criteria

Thank you