Server sleeps after last user logs out

[FreyaAmiga]

I currently run a server at home for private use. So not connected to the internet and just for memories (I love the old WOTLK). I play half an hour here, maybe a few minutes later on.

On the real Blizzard servers, there where always people, so time always went by. Logging out was beneficial, as your character could get rested. Also, copper and etc spawns more often as well. Now, after 2 days, my character isn't fully rested, but also, resources spawn less often (like copper ore).

Is there a setting I can make to change this? This should be an easy fix right? After some leep-time, simply add a calculated amount of rest and spawn resources as if the map was just new.