The biggest hurdle we face with abrupt change is to reactivate useful processes. Things that used to be comfortably resolved with standard protocols and procedures now requires cognitive effort.
The workload goes up. Specifically at the top. Generally, people who execute processes are not the ones who design them in the first place. When these processes are no longer effective, the work of redesigning them often goes up a level in the hierarchy.
The sooner you are able to capture, in a repeatable process, that which has now become project-based, the sooner some state of normalcy will return to your business.
Then, to design processes that learn by themselves so that next time, you will respond faster, with less strain at the top.