Am I really expected to stop attacking to escort these spirits?

Currently is best part about Spirits that they not move on their own.

For now atleast, you can do Abyss + Spirits.

Don't touch Spirits, clear Map, clear Abyss.
Once you find Amanamu's Void Rare from Abyss, don't kill it and go kill all normal Rare on the Map, so all Spirits could only target that Amanamu's Void Rare you kept alive.
Then move all spirits on the map to that Amanamu's Void rare, and make sure that you kill that Amanamu's Void rare outside of smoke cloud it spawn, so you can damage it inside cloud, but make sure to kill it outside of it.
Then see huge pile of omens.

I didn't do much of it, this is best result so far from single Amanamu's Void rare that had 3 spirits.