"The hell you can endure is just as great as your love."
In moments of heavy workload and chaos, some managers tend to fantasize about giving up and leaving. Binary thinking appears, even thoughts of self-sabotage with sentences like this - "I can't fix everything; therefore I won't fix anything."
This is a natural defensive reaction, but these moments are very suitable for something else instead of giving up. They are perfect for a break.
One of the easiest ways to get out of this state is to take enough time to rest. Then focus only on what can be fixed immediately. And then on to the other. Thus, the work takes off, and the feeling of control over the environment returns.
The other stream of attention, of course, is on the people on the team. Those who, if they are also on the verge of burnout, are likely to have fallen into the trap of binary thinking - all or nothing.
Support for them is similar - first, take a break, then focus only on what they directly control by their effort ... and only then - return to "everything".