What happens if you receive a scholarship after accepting the Aid letter?

Hello. Today I just got my financial aid letter from the college I'm planning to attend. Fortunately, I have all of the tuition/fees paid off (my family is super poor, so it's covered), with the only things being left to pay for is room and board. I got a scholarship that helps cover my on-campus housing costs. The college says to report outside scholarships after May 1st (College decision deadline). Honestly, I'm kind of terrified that my aid will get reduced because of me accepting this housing scholarship. Has anyone experienced getting a scholarship after you accept the award letter? Sorry I'm a first-gen student so I don't have anyone to ask, thanks in advance!