No, because you have only two chance to give jee advance and one chance is compulsory with 12th if you give jee mains along with 12th by chance you are not select in jee mains even if your chance to give jee advance 2018 is missed. And second chance is when you repeat in 2019 and give jee mains again 2019 so 2019 will be your last chance to give jee advance .so you can not give exam of advance in 2020 if you had given 2018 and 2019 jee mains.