Interview nerves, what actually helps? - 18 weeks in

It has been 10 months since my last interview and I feel rusty. It has been a long 18 weeks. I have practised answers but they sound stiff. How do you prepare answers?

Keep everything in writing and save the confirmation numbers. It made the follow-up calls so much easier.

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