Is it realistic to prepare for the CSCA in 2–3 months?

I’m planning to apply for an MBBS program in China and need to take the CSCA exam (Maths, Physics and Chemistry).

I’m 26 years old and have a BSc with honours in Diagnostic Radiography. I didn’t take A-level Maths, Physics or Chemistry, but my degree included a lot of physics and scientific coursework.

I’m currently studying Mandarin full time at a university in China (about 3 hours a day), so I could realistically only study about 2–3 hours per day for the CSCA.

I’m hoping to take the exam in May, which gives me about 2.5–3 months to prepare.

Do you think it’s realistic to pass with this amount of preparation? Has anyone done something similar?