I passed my exam on the first attempt with 3AT after prepping for 5 weeks (2-4 hours per day). Here's my process:
Watched all prepcast videos while following along in the pmbok guide. Read the Agile Practice Guide once. Spent a good chunk of time on this first run (3.5 weeks).
Then did practice exams for 1.5 weeks before exam. Did all 4 exams along with timed quizzes. Also reviewed the prepcasg formula guide and questions, though in retrospect would have been fine without that. In the actual exam I took the first break, skipped second break - finished exam in 180 min.
Lessons learned: you can pass the exam with just prepcast, exam simulator, pmbok guide and agile practice guide.
Prepcast agile videos are great for building an agile foundation. Practice Guide fills in the gaps.
Exam Simulator is key and very reflective of question style/content on actual exam. Big thanks to the prepcast team for this excellent resource.