Do I go to sleep, then wake up for a WILD?

[Eel]

I'm confused, in the tutorial, it says that I should sleep 4-5 hours before a WILD, so do I go to sleep, wake up, then do what the tutorial tells me to do?

[Hukif]

Preferently, yes, you can attemp it before going to sleep, but its far harder (in most cases) than after sleeping.