If you plan on using the printer again in the next 12 hours I leave the filament installed. If not I pull up the tube and cut it an inch above the extruder.. i have a direct drive so that does not waste any filament and I can put the spool away. Next time I need to use it, I heat the hot end, back out the short piece and insert the end of the spool and I am ready to go.
Hope that helps