How to prevent "this webpage has reloaded because it is using significant memory"

In OS 11 Big Sur, I often get "this webpage has reloaded because it is using significant memory" while watching videos for class in Safari. Is there a way to prevent this from happening? The forced reloading of the webpage causes the video to start the beginning everytime (happening every minute or so of watching). Before the latest update it would only give a prompt that significant memory is in use and I should reload/close the tab but now it reloads automatically and it makes the videos unwatchable, any advice on how to stop this from automatically happening?