I’ll make an updated lemmy post as well but for now it’s an old reddit post of mine. There’s also some great alternatives that I think are easier to set up if you don’t mind managing a separate subscriptions list - I made this script specifically because none of the options I’d seen were able to take your subscriptions from youtube and check them.
May be worth trying to set up with one of the alternative youtube frontends that have been popping up so you can use those accounts. I think it depends on if yt-dlp allows it as that’s what’s doing all the work here.