How long should I revise for A-Levels during Easter?

My school recommends 30 hours a week over Easter

You should know when you get your results that you worked as hard as you possibly could. If you couldn’t say that, you need to increase your revision hours.

Imo in the Easter holidays before a levels, almost all time shouid be spent revising- I’d recommend 8-10 hours a day.

Good luck!

Hi, I'm in Year 13 and do English Literature, History, Economics and RS. I'm aiming for all A's and A*s and am currently working at an A in English + RS and a B in Econ + History. How many hours on average would I need to revise over the next week and a bit to go up by a grade in the final exam, especially considering that they're all essay subjects? Thank you