How to keep the safari screen awake using shortcuts ?

Hello,

I am doing a training online that requires me to watch/read some material and dedicate X hours of time on the opened document within safari. The software understands if the material is opened up but no interaction has been made and closes the session, without any hours recorded.

I was wondering if there could be some kind of shortcut developed to keep the screen awake + scrolling/pressing buttons to “interact” with the document for an X period of time and then close the safari window.

Any idea would be appreciated :)