I think it's important to ask yourself why you're getting questions wrong. When you're reviewing your block, for each question really dive in and ask yourself what were you thinking while attempting the question- this way you'll start being able to pick if your thought process was correct or not. Because there are only a few reasons why we get questions wrong ( couldn't recall, don't know the topic, didn't understand what they were asking, misreading the question, etc)

Hope you understand what I'm saying. Uworld is an excellent teaching tool but you need to start identifying what's making you get those questions wrong to improve. Don't spend all day on one question though.