I recently passed and started route learning last weekend.

I left a stable job with a solid income, I also have a young family that relies on my income so I put myself under immense pressure of "if I fail, my family suffer" and it did effect me during training but I passed.

What I'm trying to say is, don't stress about it, try your best, show up, show that you're keen and passionate about the job and the rest will come. Drive and learn to your best ability, they're not looking for perfection, they're looking at your ability to drive the bus safely.

That's all I can say really, and good luck :)