Look at your talent. If you think you have a good understanding of science and a good imagination, I recommend you to choose math.

If you have more perseverance, choose English.

Also, talented people may be able to learn math well in a month or two, but some people are born without this ability, and their grades are low after studying hard for three years.

And English can be said that everyone can learn it, but it takes time.

However, if you have money, you can go to New Oriental for a month. It is said that studying there for a month can make a qualitative leap, but it is very expensive.