EJU Preparation

Hello all, I am planning to enroll into a Japanese University English Program and they strongly recommend that applicants do the EJU.
Been looking for resources on study prep for it, but am unable to find many besides the official JASSO past year papers.
Are there any guides on how to study for EJU, specifically the Japan and the World and Maths-1 portion? Planning to take those 2 as those are the only 2 required subjects I have to take.
Thank you so much!