Time is not a problem for me on these types of tests so I don't need to practice in timed mode.
I find that if I do practice in timed mode, I spend 45 min- 1 hour doing the questions and another 30 min-90 min reviewing for a grand total of about 2 hours. Really hard to do more than two blocks and study First Aid if you go that way.
So I do blocks in tutor mode, skipping the ones I need to come back to like on the real exam, and I flag questions that I need to review later and then keep going. If I miss something I could have gotten right I know immediately why and what happened. Before I'm too tired because it's question 95 of the day 🙂
Also I just figured out (I know, you can laugh at me) that you can sort the marked questions out for each uworld test you take and that has helped me out tremendously with a rapid review. This way, each 44 question block takes me about 1 hour and 15 on average to complete and review.