So, a theory of everything is not possible because the theory (information) is not everything.
We can,however, and do, intuit everything and the nothingness that encapsulates everything. It is the intuitive nature of knowledge, of consciousness, that grapples with reality.
Consciousness is or is not expressive of the nature of existence, while is not expressive of the nature of nonexistence. If consciousness is not expressive of the nature of existence then it must exist outside existence. Since it cannot exist in nonexistence it must be expressive of the nature of existence.
There is a serious theological problem in all of this. The mind of God must exist outside existence, in nonexistence if He is able to bring existence out of nonexistence.
There is another approach that can be taken. The Mind of God can exist outside both existence and nonexistence. This would make nonexistence an aspect and the foundation of creation. That solves the problem but it removes God to a place outside reality and non reality, existence and nonexistence.
The alternative is for God to exist in nonexistence. While this is conceivable it is not possible, then, for us to be joined with Him eternally. I have no answers to this, only stumbling blocks.
Sometimes ya gets the goat, and sometimes the goat gets you - that’s just the way it is.
Use the Force, Neo, there is no spoon.