I have 2 big ones that make it easier
1. The more thoughtful questions you ask the less you have to talk! Write down like 5 tonight
2. At the end of the interview ask “hey thank you for your time today; is there anything top of mind that we didn’t get to touch on that you’d like me to go over?” Something like that. Shows you are serious about the job and whatever they do ask is an opportunity for last min brownie points