Unfortunately, this idea would take far too long. Even with enough methods at hand, for these people to step into the realm of gods... even for all of them to become demigods, was not something that could be accomplished in a short time.
So he could only improve their strength as much as possible while also dealing with all the miscellaneous matters at hand.
Since they were heading into another Main God's territory this time, Yinsen was not sure what might happen. If they were delayed too long and held back the development of his Main World, it would not be worth it.
So first, the divine kingdom had to complete its basic transformation before he could leave.
During the divine kingdom's transformation, he devoted part of his attention to that world every day, comprehending more laws from the world's changes and birth.
It was not that he would be unable to remain in contact with his divine kingdom after heading into another Main God's territory. Rather, this state of dividing his attention to comprehend laws would limit how much of his strength he could wield.
That naturally did not matter against ordinary enemies. Ordinary people were so insignificant to Yinsen that he could crush them with a casual wave of his hand, so there would be no impact whatsoever.
But when facing a Main God, he was not arrogant enough to believe that he could casually Instant Kill an existence at the level of a Main God.
Besides, as he experienced the birth of the divine kingdom every day, his strength was steadily increasing as well. He could clearly tell that this transformation of the divine kingdom would bring about a rapid leap in his strength, after which the pace of improvement would slow down, giving him a buffer