Am I screwed for A-Levels? 😬

Got BBU in my mocks (WJEC Film/Edexcel Maths/new AQA Physics), A2's coming up very quick and haven't started revision, wasted my half term watching TV so far and am worried that I've left it all to late? Neeed AAA for Uni, but bit paranoid that's never gonna happen if I haven't already started... you guys done much? Or am I the exception with everyone else doing work?