OK. So you need to treat when the questions arrive as the start of the interview. I.e. be at the relevant device ready to receive, dressed in whatever for the interview; have pen and paper to hand; have whatever other notes you want around you; mute all other devices.
When the questions arrive, printing them sounds like a good idea if your printer is fail-safe - otherwise it's just more stress.
Take a deep breath!
Read any instructions at the top: any scene-setting; or instructions like - pick 3 of the 6 Qs etc
Read all the way through the document, carefully, not stopping to answer anything now. Make sure you get all the way to the end. If you print out, does it match the number of pages on screen.
Then, you can start to jot down the answers.
As I understand it, this approach is advocated as being helpful for interviewees with autism, as well as being helpful for people who get nervous, so it's a bit of a trend. The overall idea is to help you deliver the best answers because you've had time to consider your responses and how they will best fit. After all, most of us don't have to spontaneously answer questions in our job, but take a couple of minutes to think about, and the reply. Just remember, the company is trying to be a good interviewer and employer, not catch you out.
Anyway - very good luck!