I did WFH for years prior to pandemic and found it much easier to work less hours. Spent many long lunches with friends, took time out of the day for personal projects, made sure to schedule remote meetings with old friends and former coworkers during the middle of the work day.

It's possible it might be that your current office has a terrible culture (most companies failed the transition to WFH). Realistically you shouldn't have to be working more than 30hrs a week, and not being in an office means you don't have to do any more "performance" work. It might be as easy as finding a new employer that has a more realistic sense of work life balance.