Is 2 months enough?

I do 2 a levels instead of 3, my other is a BTEC. I have 2 months until my Classical Civilisation and Religious Studies exams. I'm afraid I don't have enough time, but then because I have 2 exams I think I'll have a better chance than if I do 3. I haven't done any revision yet and got a U and E (did nothing to prepare) in my last mocks when I'd ideally like 2Bs or higher. I feel really worried, could someone give me some tips? Thanks