Hey Deepak,

You can appear 3 times in JEE mains.

From 2019 you an attept 2 times in a year(January and April).

so 3*2=6 years in total you can sit for jee mains exams. 

thank you

Hello deepak, hope you are doing well sir, well, one can appear for jee mains as maximum as thrice.. candidate can appear for jee mains twice a year.. though from 2019 onwards it will be changed as jee number of attempts would be in total six..please refer to the link below to know in detail

https://engineering.careers360.com/articles/jee-main-number-of-attempts