I freeze in interviews, tips? after 17 years as an IT help-desk technician

It has been 4 months since my last interview and I feel rusty. There are 17 people counting on me, so I am trying to be careful. The role is similar to my old job as an IT help-desk technician. What calms you down?

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

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