I freeze in interviews, tips? (Tulsa)

I have an interview on Monday and my stomach is in knots. I have been trying to stay organised about it. I have practised answers but they sound stiff. What calms you down?

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

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