I also struggle with anxiety, when I took my driving test I constantly wanted to bail out of it. But they don’t talk to you constantly, they may ask you a few questions at first but that was it for me, my examiner was very quiet. Which helped a lot, as I absolutely hate small talk. Before I knew it I was back at the centre. Passed my test.
My mum told me just to pretend I’m driving with my instructor, it’s basically the same but they just not some stuff down. It goes faster than you think it will and it’s not as bad as anxiety makes it out to be.