Learning what to skip was the toughest part for me. If you are taking the computer format of the exam, if you skip an item you can’t go back to it. Because you have to answer the questions in order, I often faced the choice of thinking hard about a question and investing time into it, or giving up and moving on. It’s especially hard because I wasn’t sure how hard the future questions would be, so it was really hard to budget my time. I was sent a practice exam on paper, but I went through it like a regular exam (skipping between questions and leaving the tough ones for the remaining time at the end).
If you have a paper exam try taking it straight through to emulate the computer format. You can’t look at any future questions, only the one you are currently on. And no returning to skipped questions. This will help with time management hopefully.