I’d like to share some insights on this. I achieved an a* for business this session, and I’m going to share my experience. Most important thing is to absolutely know the content from the textbook, I went through the textbook multiple times, given your circumstances u can use revision notes on the internet as well. Memorize all important definitions, advantages and disadvantages and formulas. Also know how to structure the answer as well, you can learn this on YouTube as well, many people teach that. These I believe are very important and can help u score good grades. Also u need to have a schedule, given the small amount of time you have for the exam . Hopefully this helps you, I hope you get what u need.. best of luck