Did I Study the Wrong Way This Whole Time?

I have been studying for my PMP exam for almost three months, reading the guide and watching videos almost every day. But when I finally tried PMP practice exam questions this weekend, my score was much lower than I expected. It honestly stressed me out. Now I’m wondering if I focused too much on theory and not enough on application. Has this happened to anyone else? How did you adjust your study plan after seeing disappointing practice results?