Honestly the practice tests are much easier then the actual exam. I recommend pocket prep app, it has a lot of great information! Try to look at the bigger picture of the body systems and understand how/why everything works together. I am happy to answer any questions you have and help the best I can.
One question that is on the test is about ossification and that has not been in ANY study guides I've come across. Infact there were a lot of questions that I didn't even study, and I was blindsided because I used all these study guides/exams.