How do I stay signed in to all Microsoft services in browser forever?

I have three devices- a HP laptop, iPad Air 4, and iPhone XR. The browser I use on my laptop is FireFox.

I am a university student and my university uses Microsoft Suite for everything, so I have access to Office365 as well as the actual Office Suite.

I have to log in to every single service individually (OneDrive, Office365, Word, PowerPoint, Outlook, etc) multiple times a day despite clicking "Stay Logged In" every single time I am prompted. To be honest, I think I am logging in to Microsoft services at minimum 5 to 6 times a day, all attempting to get in to different websites, etc. This also includes my Canvas account and my university website account as thes are linked to my university Microsoft account. I am writing my dissertation currently and it has become a major frustration every time I try to make some progress on my uni work- it wastes time and makes me wonder why this is set up like this.

Not only that, each log in prompts me to use an authenticator (Google Authenticator) on my phone or iPad which I don't always have on me. I have attempted to remove the authenticator to make the login process easier, but my university has set it so that all accounts have to have an authenticator connected otherwise it won't let me login until I connect one.

What have I done so far but didn't work:

• Cleared my Browser cache
• Used a different browser
• Selected "Stay Logged In" when prompted
• Selected my university account as my primary account
• Set up my browser to remember all passwords and logins

Nothing suggested so far on the forums has worked for me. I just want to stay logged in. That's it. No one else accesses my devices and I have trackers on all of them in case of theft. I have taken my own personal measures to make sure nefarious people can't get in to my accounts- I don't need Microsoft logging me out to "protect my account" every time I close a tab with a Microsoft service.