ALL the inheritance and dominating happens in earth time 8 years.
which is in on shadow realm time 800 000 .
And in earth time 1 year Darkseid will invade.
so don't have any confusion.
as each realm specific rules.
in the third year when batman disappeared Stephen wolf arrived to earth.
Time line
------------------------------------------------------------------------------------------------------------- | | | | Batman left earth Steppenwolf attack 8years of batman disappearance Darkseid