Interview nerves, what actually helps? after 3 years as an office manager

It has been 2 months since my last interview and I feel rusty. I have read a lot of threads here and could not find my exact situation. I have practised answers but they sound stiff. How do you prepare answers?

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.