I live in a suburb, too. We have lots of Boy Scouts camp equipment, so we could at least cook what’s in our freezer, but if we woke up tomorrow in 1920’s conditions, it would get difficult very quickly.
My grandmother went from wealth to pennies during the last go round. The adjustment was hard (running water and power to an outhouse), but they did it and recouped.
First trick is to decide to survive. Most people in such situations collapse mentally, and then perish. My grandpa lived in a rail road car, my other grandparents as hired labor on local farms.
As to taxes and such, good luck enforcing them.