Dealing with anxiety/stress while taking the test

Hey!

I'm currently studying for the September LSAT and this would be my third retake. As I take more prep tests and timed sections, it's becoming more and more apparent to me that my biggest enemy is panic which leads to me rushing through questions that I can otherwise answer relatively quickly in a more relaxed setting. I'm aiming for at least a 170, and it's feeling like a less attainable goal because of my anxiety even though this is the best I've ever been in regards to the actual content of the exam.

Does anyone have any tips on not panicking or learning to relax while taking the test? This would also be my first time taking it in a test center rather than remotely which I'm worried my alter my general state of mind.

Thanks for your help!