Advice
My advice for those going into an internship with EY is to work on your time management and communication skills. Your supervisors need to know your progress on different tasks to make their tasks flow smoothly too. If you are struggling with something, let your supervisor know. In my experience, supervisors were extremely helpful on resolving problems and harder tasks.
I also recommend to ask questions. I made it a point to ask at least one question for every meeting or check in. This helps you understand your tasks better, and it shows your supervisor that you are engaged in the conversation as well.