Three Years 

After two months of working hard to bring the egg back to life, Minos made some progress, reversing more than 2,000 years in the egg's time.

Unfortunately, he would have to undo a few million years to get the egg back to the way it was when it still had a metabolism.

At that rate, it would take him more than a thousand years to achieve what he thought was necessary to return the egg to a living state, something completely beyond his means.

Minos was only in his second century of life. How could he commit to something that would cost him more than 10 centuries of hard work?

That means he wouldn't just have to put the egg aside for 10 centuries. He would have to give up his cultivation and focus solely on reversing the egg's time by more than a thousand years to get any results!