I hated QBank and hence stopped after like 400 questions. I found the test NOT at all like the USMLE. I took two NBME exams (actually 3 if you count the one our school gave us) and those were by FAR the most like Step 1. I would suggest trying “other” questions sources and see if that boosts your morale. I was getting so down with Qbank that eventually just thinking about doing questions made me sick. Good luck!