Thank you all very much for your input. I will stop PTing and head back to the curriculum again. When I went through the curriculum second time, I didn't watch all JY's solution for the problemsets. I will do that this time. Thank you :)
Also, if you have a good feel for the question type, don't just blow through all the problemsets. You need to save some for later when you are in your PT phase so you can shore up any weaknesses you may have.
Problemsets are just a set of questions arranged by LR type (e.g. Flaw, necessary assumption, most strongly supported, etc.) and depending on the course you select, you have access to questions with varying levels of difficulty