I genuinely think that you should listen it as many times until you can hum or mentally sing along with it… if this makes any sense. Like if you are able to associate the song’s title a melody then it’s “worth it”. For me(I’m not even kidding), this is probably after playing it 4-5 times on repeat.

I’m not autistic but I do have a lot of fear about over staying my welcome. It has gotten to the point where I would politely ask if I over stayed or if my welcome has expired. I find that being direct is the fastest and most efficient for both parties.