Many years ago when I was working as a consulting engineer, I had two almost fulltime (30+ hours a week) clients going at the same time. In person. It was manag

Many years ago when I was working as a consulting engineer, I had two almost fulltime (30+ hours a week) clients going at the same time. In person. It was manageable because the sites were walking distance apart, but everyone got the hours that they were billed and everyone's work got done. Honestly, if you're fully remote and don't have any commute, that sort of thing is quite doable if that's how you want to spend your time.