Hi there,

It has not been confirmed yet whether the syllabus be reduced or not for jee main 2021 but it has has chances of getting reduced to reduce the burden in student as this year due to covid19 the coaching and school are closed so student are not getting proper guidence.

So if it get reduced then only the easy topics and less important topics would be reduced that is around 3-4 chapters each subject.

I hope this help