An enemy who keeps changing tactics is out of good ones. Stay on your plan and let them keep auditioning new ones.
LEADERSHIP
LEADERSHIP
Somebody switching approaches every few days is usually not being clever, only unsteady. A person with one thing that works keeps using it. When the insults change shape, or the rules keep moving, that is the sound of nothing landing and them casting around for what might.
If you are on the receiving end, resist matching their pace. Keep doing the plain thing you were already doing, hold on to anything worth keeping a record of, and let the noise show itself for what it is. If it turns into something unsafe, that is not a contest to outlast alone, and telling someone is a move.
Who keeps switching approaches to get a rise out of you?
Free, with nothing to buy inside it.