Do I still need to apply for accommodations if I've been approved before?

No. If College Board approved you to take the PSAT 8/9, PSAT/NMSQT, PSAT 10, or AP Exams with accommodations, you don't need to apply again. But some accommodations are administered differently on digital tests, so ask your SSD coordinator or school counselor if you need to request any additional accommodations.