I've been teaching my 4yo that when I am correcting her and she's not ready to receive it, she can tell me, "I'm not ready to talk about this."
Then we set a timer for 10 minutes, and usually by then, she's cooled down enough for us to have a calm and beneficial conversation.
It's so much better than the battles we had before when I tried to get her to acknowledge and change her behavior while she was disregulated.
Sometimes kids need more space to process.