Interview nerves, what actually helps? - 10 months and counting

I have an interview on Thursday and my stomach is in knots. This is my first time dealing with any of this. I have practised answers but they sound stiff. Any questions to ask at the end?

Arrive early, drink water and take a slow breath before you walk in. It sounds simple but it helps.

I record myself on my phone and listen back. The second try is always better than the first.