This is my take on Level 2.
Ethics is 10%. That’s set in stone. It doesn’t relate to any other material. You just have to plow through it.
As for the others, I didn’t view them by study session. Rather, I looked at them as “families” that borrowed heavily from each other.
Accounting/Corporate Finance/Equity are all a “family”. Sometimes it’s hard to see where one ends and the other begins. They are all inseparable, and can only be understood in context with each other. Also, understanding one will only enhance your knowledge of the other. This “family” will be 50% of your entire grade.
Derivatives and Fixed Income are another “family” that borrow heavily on each other. It’s hard to go through the Fixed Income material if you don’t know your derivatives. This “family” will be about 20% of your grade.
Alternative investments has a lot of equity-like material in it (with respect to real estate), and a lot of derivatives-type material in it (with respect to commodities). But it also has a lot of stand-alone material (private equity and hedge funds). I would expect it to be around 5%. (Just a hunch–given that it has only one study session and Fixed and Derivatives both have two.)
Econ/Quant/Portfolio Mgmt are another family. In fact, PM is nothing more than applied econ and quant. I would expect these three to be about 15%. (If you get hung up on econ and quant, just blow by them. Don’t spend too much time on them if you can’t grasp it, but be sure you understand the concepts by the time you start Level 3.)
Remember–accounting, corporate finance, and equity will be half of the exam. You should spend your time there. (If you can’t grasp the accounting material, then you probably won’t pass. No matter how much time you have allocated to accounting, it’s probably about half of what you need. I’m a CPA, and I still spent considerable time in the accounting material.)