1 If all the books are distributed, you can teach yourself. If not, you can ask your seniors or teachers, but it will be very difficult and require great efforts.

If books are not distributed, you can borrow books from seniors, or buy new books yourself after asking, but it will be more expensive.

In the process of study, it is suggested to attend classes when the school allows, but we must arrange the time reasonably and don't give up our original courses.

It will certainly be difficult to complete a four-year course in two years, mainly by self-study, asking more questions and learning more.