Don't sweat it. You would have read the wrong stuff over the summer anyhow. Focus on distilling the huge amount of information down to it's bare essence. Be realistic....a normal med student can't learn everything they throw at you...so don't try...and don't get into a panic and drown by trying to learn every detail in a futile effort.
Learn what you need to learn in order to get through the week, and then the module.
Unless of course you're the gunner, then just read and remember everything.