If the temperature difference is large, you can bring some thinner clothes and two or three thicker ones. Also, if you think your clothes should be eliminated, I suggest that you take two less clothes, and then go shopping with your roommate when you get to your school. You can also buy your favorite clothes when you go shopping.
Bring more summer clothes and less winter clothes and autumn clothes. If your home is close to school, you can bring more clothes in summer and less clothes in autumn and winter. After all, clothes in autumn and winter are heavy, so it is inconvenient for you to go back and forth by train or bus. About two or three winter clothes are enough, and parents can also send clothes to school, saving time and effort. But as far as my personal experience is concerned, when I was in college, I didn't want to wear my old clothes at all, because I thought the clothes I wore before were too old-fashioned and looked at the clothes worn by new students at school. So over time, I also learned to buy clothes for myself outside.
In fact, the number of clothes you wear depends on the size of your wardrobe at school. You can buy as many clothes as you want to put in your wardrobe. Because the wardrobe is big enough, I always feel empty, so I always want to buy some clothes to fill it. If your wardrobe is small, you already have several clothes. So be sure to buy a suitable wardrobe, neither too big nor too small.