Need Advice- Differential Equations at NRCC

I’m currently taking differential equations at new River cc with Pablo Chalmeta. To be honest, he does not teach one bit, as his videos do not help with the homeworks & quizzes at all. I have to take a test on Friday, but feel lost. I have completed all the homeworks and quizzes, and I’m super overwhelmed. Has anyone had this class and would like to offer any advice. It would be greatly appreciated. Thanks!