Last minute revision

I'm retaking A-Levels (OCR Mathematics B MEI and Edexcel Economics A) as a private candidate for 2025 entry but I've procrastinated for the entire year and haven't even looked at the course content for either 😭 my target grade for both is a B but I'm not sure what exactly the best route for revision is at this point in time other than past papers. I'm probably gonna spend the next few days learning Theme 1 and Theme 3 course content for my first Econ exam but my biggest concern is the spread of exam dates (Econ1 12/05, Econ2 19/05, Maths1 04/06, Econ3 05/06, Maths2 12/06, Maths3 19/06) specifically the first Maths exam being the day before the last Econ exam that I feel will really mess up my revision plans since I was planning on dedicating the next few weeks entirely to Economics revision and then beginning Maths revision on the 20th of May.

If anybody has advice on what they believe would be best in my position it would be greatly appreciated 🙏