How many changes for jee main and advance

Dear student,
This year jee mains Jee mains will be conducted in four sessions i.e. February, March, April and May. The application process for the February session which will be held from 23 to 26 February has already started and will be ending soon on January 16th, 2021.Candidates can either register for each session individually or can register at once for all the four sessions. There are some changes in the pattern of the examination. There will be 20 Multiple choice questions in each subject along with 10 Numerical value questions in each subject. Candidates have to attempt any five questions out of 10 Numerical questions in each subject. The maximize marks of Jee will be 300. The dates for other sessions are: Session 2 - March 15 to 18, 2021
Session 3 - April 27 to 30, 2021
Session 4 - May 24 to 28, 2021
JEE Main 2021 exam will be conducted in two shifts, Shift 1 and Shift 2. Shift 1 timings are- 9 am to 12 pm while shift 2 timings are 3 pm to 6 pm.It will be conducted in online mode in 13 different languages.
No updates have been given by the authorities for the changes in jee advanced till now.
For more info you can visit the following link:
https://engineering.careers360.com/articles/jee-main-exam-dates