Hello adelli . Well jee advance cutoff depends on various categories like paper difficulty , the level of students giving paper this year and even on the total marks of the paper so first to just pass your paper for further checking you need atleast 5 marks in each subject as per your category so it counts to 30 marks as we give 6 papers . Now you wont get seat you need to score atleast 80 marks to get seat in iits with your desiring branch but still the cutoff varies so my marks but it wont fluctuate more like +10 or -10.

Hope it helps