Everyone knows that good memory in the morning, but good memory in the morning is based on adequate sleep. I'll only give you some directional and specific methods, and you can find them yourself. Your plan is too tight and there is no proper buffer, which makes you very tired. If you are tired, you will feel sleepy. If you are sleepy, you will want to sleep. How can you have the mind to study? I suggest you set aside some leisure time for yourself in your plan. Don't take the self-study exam too seriously. The most important thing is that you insist, which is the most important thing.