Can he accept the problem that he will have to take classes to make up lessons when he is a freshman?

Then there is whether students are extremely disgusted with mathematics. Do you have room for communication?

Now he is a sophomore. It is no exaggeration to say that his studies are getting heavier and harder. If he wants to change a poor major at once, he must rely on himself. The more pressure his parents put on him to learn this thing, the stronger his boredom.

At present, the best way is to guide from the side, do not directly interfere, and try to encourage. Even if there is a little progress (mathematics), we should praise him with great fanfare. Then you find a one-on-one math teacher (from the first year of high school), and when he speaks or has the will (respect him as much as possible), you can arrange it again, because learning this course well will definitely take a long time and patience.

Learning itself is happy, and people who can't find this interest will never know how to learn. Personal opinion!