If you had 8 weeks to complete Further Maths and A2 Maths, how would you do it?Watch
You also need to tactically choose which modules you want to take. I don't which exam board you are doing, but there are probably some modules/ papers which tend to have a lower A* boundary (although it might be hard to see that given the linear system has only been re-instated). I would look to see which modules you are interested in/ better at; not only will this make it easier to learn the content, but also won't make it feel like a chore.
Once you have decided and have gone through the summary sheet, you should attempt some harder textbook questions and learn from any errors. The actual learning should be done in chunks as I don't think it is realistic to learn a whole module in one sitting; you are better off doing it bit by bit, ensuring that you master each bit as you cover it. Use online resources if necessary to aid your studying. Given your timeframe, I would begin to do past papers once you feel comfortable with the practice textbook questions. From there on, it is just a repetition of past papers and addressing any specific errors/ concerns.