take it one day at a time/take each day as it comes

"We are surviving one day at a time,” a restaurant manager in Manhattan's Chinatown said. Business began sagging in January, around the Chinese New Year, and plummetted last week.

NEWYORKER.COM

The Coronavirus’s Impact on Manhattan’s Chinatown

A visit to the neighborhood in the days before New York City restaur

take it one day at a time/take each day as it comes

 

to deal with things as they happen, and not to make plans or to worry about the future:

I've lived through a lot of changes recently, but I've learned to take it one day at a time