What are your best interview tips...and advice for what to do if you completely blank during an interview?

Hi all!

I am unfortunately going through the job hunting process for the first time in a decade after being laid off a few months back. I am very grateful that I am landing interviews, and for the most part I think I'm doing fairly well with them. But I was just wondering what your best interview tips are?

Currently, my routine includes coming up with a list of possible questions and writing answers for those, rehearsing those questions/answers so they don't sound robotic, and then keeping notes (bullet points, short phrases or words) to reference if needed during the interview for virtual interviews.

I was also hoping to get some advice for what to do if you just completely blank on a question and can't come up with an answer. Interviews give me extreme anxiety regardless of how much preparation I do, and there have been a few occasions where my mind just completely blanks and can't come up with an answer, and I just end up word vomiting, lol. Any tips for avoiding this, particularly for when you legitimately cannot come up with an answer?

Also, I've seen people recommend having 4-5 stories from your career to have in mind for interviews. What type of stories should they be, and how do you apply them to interview questions? Sorry if that seems like a silly question...I have autism, so trying to connect those stories to questions/answers doesn't come easily for me....it's also probably why I blank sometimes during interviews, lol.