Password Protected Page Saving Cookie grrr

So my main problem is I need to password protect a certain page and I did some research and found out wordpress makes a cookie that lasts like 10 days on the computer that enters this password to the designated page.

I want it to be so that after 60 seconds, they have to enter the password again.

This link https://www.ads-software.com/support/topic/password-protected-page-still-shows-even-after-cookie-expired?replies=2 talks about entering some code in the wp-pass.php file or something like that, but it looks like the file structure has changed and that’s not a file in the root folder anymore.

So what do I do?