At the moment I have done 320 questions (random qbanks), and my average score is 63% (I am usually a little below from the average test score that Uworld gives you). I plan to take the step 2 ck in 3 months, doing uworld once entirely and then doing the wrong questions again. Given my low scores in comparison to the average on random qbanks, should I start doing uworld by organ system or should I continue doing random qbanks? What will you recommend?

Note: I read the First Aid by subject in the morning and after I am done with that I do the random qbank and continue reading FA with the random questions. What I want to know is if it will be more helpful to just do the qbank with the subject that I am reviewing at the moment in FA.