In fact, most people will have some discomfort in junior high school, just like me. I got good grades in primary school, but I always felt very tired when I first entered junior high school. My homework is often written until eleven o'clock, and my math exam is always poor. I naturally feel a little inferior, but we should overcome it and not always compare with others. Then you will be under great pressure, and naturally you won't do well in the exam. But as long as you pass this hurdle and this adaptation period, you will gradually feel less tired. I think you always want to go back to primary school, but we can't always miss the past, we must move on.

hope this helps