Doing worse on SAT retake?!

What will colleges think if you do worse on a SAT retake?
I’ve registered for March SAT. I’ve already taken it in November and got 690 CR 800 M 800 W. I know it’s highly unlikely I’ll get another 800 M/W, and I feel really unprepared for CR. I got 80 CR on PSAT but lately I’ve been doing pretty bad on practice tests, or like no improvement. Should I even take the March SAT?

Are you applying to top schools?