I went back to 5 days a week in office in summer 2021. I hated it when I was told but now I’m glad it happened. I walk 2 miles each way to work. That walk is one of the nicest parts of my day. I get crazy paranoia when I can’t speak to people face-to-face, and I can maintain a routine. I appreciate I am lucky in my situation but I would take the 4 days and enjoy a long weekend where I can properly unwind