So unironically I’ve managed people that should have done what anon is doing.

Some people never fucking say no to work tasks and they waste all their time on the overhead and adhoc crap instead of actually doing their work.

I bet OP actually spends more time doing their job now, even with the fewer hours, because the secondary stuff doesn’t matter at all.

Congrats Dutchman. You have won the rare " good boss". The boss is aware of your drop in productivity, and is assuming you need a vacation or something, but you are just doing less work instead. He sees that as a good thing.