Sleep Mode results in Shut Down

I have "Put Computer to Sleep" at 15 minutes idle in the power options. Double checked and verified this. This past week my PC started shutting down minutes after being put to Sleep. It has done it on the timer as well as manually. I'm kinda stumped on what changed or why this suddenly started. And I don't want to disable "Fast Startup" like Google has suggested. I don't feel like disabling a good thing is a solution to fixing a problem. Built this PC in 2021...