UWORLD isn’t really useful till you start studying for Step 1 tho. You will have many other resources so keep your options open.
Ps I mentioned in my interview that i would probably fail my first my anatomy exam like all my other friends who went to medical school. That I would adapt and do not fear failing few exams in order to learn how to study
Edit: I DO not recommend you saying stuff like this unless you have record to back up your resiliency and adaptability and you are being genuine . If you are not genuine they could tell and that would end up being against you. No one likes a candidate that bashes him or herself