You should watch all of my free lectures – they are a complete free course and cover everything needed to be able to pass the exam well.
Make sure you plan to finish watching the lectures at least two weeks before the exam (the index of the lectures shows how long each lecture is, so you can plan your time). I assume that you have a Revision Kit from one of the ACCA Approved Publishers (if not then it is essential that you buy one), and you should spend the last 2 weeks practicing every question in the Kit, attempting the mock exams in the Kit under exam conditions, and working through the CBE specimen exam on the ACCA website.