Ask Experienced Devs

I've been doing some interviews lately, and my most recent one seemed to be my most promising one so far, until he started doing what he called "light tech screening" and did some trivia questions to test my knowledge on what goes on under the hood. I do admit, I should have been better prepared on the topics, and didn't do as well as I could have. At the end, he said my experience was interesting but I needed a better grasp of the fundamentals, and that we should keep in touch. Afterwards, I messaged thanking him for his time, and that I needed to review my course material, asked if he thought I should review anything specific and if I could do that for a few weeks and revisit it like he said. He suggested I do a deep dive into JS/TS to really understand what goes on and why, and would be happy to revisit it in a few weeks, and again said to keep in touch.

Does that really mean keep in touch regularly or often? Or is it just a throw away yea reach out again in a few weeks when you're ready? I'm already pretty stoked to get a second chance at this, the company seems cool and I like that they aren't weighing everything on leetcode problems. If I should keep in touch regularly, what would that even be about? I also don't want to annoy him before meeting again.

Any advice would be appreciated!