Hi Gajanan,

If you have cleared JEE mains in 2019 and if you did not appear for JEE mains 2020 then you will not be able to give 2020 JEE advanced . So giving JEE advanced for 2020 you need to give 2020 JEE mains also. The last date to fill the application form for JEE mains 2020 is 12th March. If you will clear is a means of April exam then you will be able to give JEE advance of 2020. There is no relation between t means in advance of 2019 and JEE mains and advanced 2020. Both the exams are different.

I hope your question has been answered properly.

All the best for your future!