To put it simply, Khan wanted to evolve through the True Chaos, using it as a reagent to ensure he achieved an even more superior state.
Still, due to the True Chaos' overbearing nature, the process might take over Khan rather than elevate him, and Liiza could only suggest ways to limit that risk.
In human terms, Liiza wanted Khan to stop filling his attunement with mana right before the last step to solidify his existence as much as possible. In that case, adding the True Chaos to his being would have a lower chance of affecting him negatively.
Now, Khan knew he was close to the once-so-distant one hundred percent mark. He felt almost complete, but the attunement with mana required increasingly greater amounts of energy, meaning that the last step was the hardest to fulfill.
Things were even harsher for Khan due to his unique existence, and the current situation didn't help. He had just finished absorbing the Nak's home world, and planets made of mana didn't exactly come easy.
