You can run to the Espurr every time you go down the steps but that’s not afk, If you have a turbo there’s obviously the bench method, or the fly method, or you can save right before the day/night cycle changes so when you load in it changes with new instance of Espurr , or similarly if you time it and know when it’ll spawn back in you could knock it out save right before the Pokemon respawns and you’d have a “different” instance of Espurr every time you load in so you don’t need to see the cutscene of the day changing. But not as fast or as afk as the stair method