On an all advancements guide that ive seen floating around is this advancement tracker: https://github.com/DarwinBaker/AATool is it allowed for runs or is it intended for practicing? it says it adheres to the rules from the beginning of the year, just wondering if it has changed since then?

Yeah, it's allowed, no problem

you'll see runners using it all the time and I even asked Elysaku; said it's totally fine