I’d like to do 4-7 hours of work a day. I’d probably like to work 2 days, then have a day off, 2 days, a day off. Or work every day, but only do 3-4 max hours a day with it being fully flexible when. I’d like to take opera singing lessons every other day for half an hour or max an hour. I’d choose to work during hours when people are usually off and enjoy more empty cityscape when people are usually at work. If my health allowed, I’d love to regularly donate blood again. I also wouldn’t mind regularly volunterring for a cat charity or something like this. Maybe I’d volunteer in a communal city garden, but leave just before most people come.
I think, while I am sure I could find ways to fill a newly freed schedule myself, it would be better if, when we free said time, we ensure that a good portion of it goes towards community democratic engagement. Labor committees, arts projects, infrastructure repair, wherever you can help, whatever level you can help, we should work to have opportunities available that are both positive developments for the community and help develop individual skills or experiences that can be further used in life.
So, to answer your question sorta, I think 3 days of “work” would be perfect, maybe 6 hours a day or so. I think that should be paired with maybe two 4-6 hour days of community work and democratic work. You would still have more free time than before, but we would all be actively participating in the development of our society in some way.