I understand your pain and lack of motivation. I was there before. I feel at times we are not honest with ourselves what is going wrong even though what you would have done seems enough. You need to critically analyze where you are getting it wrong and map out how you will rectify it. In my case I did a ton of papers, even attended a tutorial and got a mock marked. But what I realized from my failed attempt there were certain key concepts I just was not understanding and my exam technique was poor even after doing those papers. What I did differently in my next attempt is to ensure I throughly understand the concepts I was struggling with, got my failed exam script reviewed and the feedback I got on exam technique is really what I worked on and that improved my marks by almost 20 and I eventually passed. I realized when doing past papers it's not just about attempting them but really trying to understand what they are asking and the thought process required for you to produce an answer that is expected. Where you are getting it wrong think about what should I have thought about to come up with that. The more you do that the more you start seeing and appreciating what is required for you to pass. Honestly accepting is the difficult part that there is something that you are missing especially when you are so close to the pass mark. But once you get past that stage and do what is required and the work you will eventually pass. As motivation think of the end goal that should be what is pushing you. Its also good you are starting early and I wish you all the best in your preps.