It may seem excessive, but you know from your days in university that you do better when you have textbooks to highlight and take notes on. In fact, I’m convinced that one of the reasons why so many adults struggle with TOEFL iBT is simply because they’re trying to learn from digital videos… without a notebook, a notetaking system or any kind of documents to review.
I’ve watched adults study for TOEFL for 11 years. The ones who take notes get better results. The ones who don’t take notes waste their time and later wonder what went wrong.
You need to treat the TOEFL Speaking section the same way that you treated difficult courses in university.
So… Especially if you don’t have a lot of time, you should not skip printing the documents.