You give me the impression that you are putting too much pressure on yourself. Even if you are a little anxious, you can try to relax and go out for exercise. Students should know that the postgraduate entrance examination is not won by quantity! Efficiency is crucial. In spring, you can climb mountains and relax outdoors. When I come back, maybe this situation will be gone.
Also, let me give you a suggestion. Don't push too hard now. Just like running a marathon. Your strength is spent in the first few kilometers. Maybe it's still a question whether you can make it to the end. Not to mention the final sprint. . . Now, it's OK to adjust your mentality and make a good plan every day, and you can complete your daily tasks. Don't dwell on those unfinished things, you are making progress every day. Isn't that hope?
Let me give you an example. It's true. When I was taking the postgraduate entrance examination, I wanted to start my summer vacation, but I was delayed by various things. After the summer vacation, I haven't finished reading my math textbook, which is at least 3 months behind your progress. So I couldn't hold on, so I ran to ask a senior. He said something, and I still clearly remember that "our class didn't stay in school for 400 summers". No explanation, you know. (Thanks to my Dong Ge)
There is also a saying that "the last person can go to school", which was told to us by our senior brother at the next higher level during the exchange. Take it out and have a drink when you can't hold it. The effect is very good.
Too much talk again, I hope it will be useful to you.
Good luck!