You can reduce work right now if you'd like. Live like the 1920's. No access to modern medicine, no automobile, no internet, no antibiotics. Grow your own food.
Only if you already own your own housing or live somewhere where that is already covered for you. Even then it's not like the job market is bursting with opportunities where you can take a decent FT position and earn the same pro-rata at lower hours.
Except that's the healthcare industry including large swathes of money going to parasites like student loan providers and opiate pushers as a whole, not 'modern medicine' or 'antibiotics'.
Cuba's standard of healthcare is a reasonable compromise, and their total spending per capita is 2% of the USA's gdp per capita.
The internet as a tool for sharing information rather than an endless red queen's race of scammers is similarly cheap.
And yes please, let's get rid of the private automobile. Without it we can build dense enough that walking (or transit or bikes) will get you where you are going far faster than driving 5x as far at an average of 30km/h does now.
It's really hard to get a job with such nonstandard hours, and also the housing market is extremely screwed up, and wages haven't risen enough with productivity gains, among other things.
But my choice isn't what's important here. What's important is that you don't have to give up the vast majority of modern amenities because those are usually very cheap.
Considering health is quite literally the most important thing in your life (can't spend it when you're dead anyway unlike the Egyptian pharaohs) I do not understand why so many complain about the cost of healthcare.
But when you are twenty I suppose one sees health differently. When you are 60 and take a bunch of pills to keep yourself from dying it suddenly all makes sense...
At a certain point... how many hours of your life are you willing to spend working to extend your life by an average of 1 month / 500 waking hours?
If almost all of GDP was healthcare, with costs dramatically increasing with age, then that number climbs for each additional month and reaches into the thousands. I wouldn't make that trade, especially because I'd be spending so many of those hours in my early to mid life.
Cash spent on an activity does not reflect the time that it takes, doubly so if you were able to reduce the administrative layers involved in eg health insurance.