Hello ,

You will have only one chance left then , as you have appeared in JEE Mains 2020 .

You have two chances for JEE Advance once in year in which you first appeared for 12th exam and the year next to it . If one fails in 2020 means that person is not eligible for JEE Advance this year but if pass another year and qualified JEE Mains as well that person will be eligible for JEE Advance .

For JEE Mains you have three chances one in appearing year and another in next consecutive two years.

For JEE Advance you only have two chances one in year appearing for 12th and another next year .

Since you appeared in 12th this year , so from next year you have one chance in JEE Advance and two in JEE Mains .

And one more thing the best of the two 12th score is considered for eligibility . But for eligible for JEE Advance you must have qualified JEE Mains of that particular year also .