Right now your mind is going about a million miles an hour and you're going through something that I went through about a month to two months ago. I liken it to emotional whiplash. It will get better over time but you need to actively work on slowing down. Which you are. I know it's frustrating and it's slow. And the constant pain is excruciating. I know.
But you're doing good. He's temp checking you massively and you are aware of it and figuring out good solutions on our own and with the great folks here. Keep it up. If you give in and you slip, that's ok. Dust yourself off and get back up.
It gets better just a little day by day. But those little victories add up. I can proudly say that.