My understanding is that God IS absolutely self-subsistent, unchanging and eternal Being.
And He made us in His image (i.e., as having reason and free will).
Our understanding of God may "evolve" (as He prompts it). Indeed, that's what the fides quaerens intellectum is all about.
But His essential Being, and His Nature, are "constant"; that is, not in any way, shape, or form dependent on our "evolving" experiences and insights.
This is my understanding.
God's Name is I AM.
If God is unchanging, we have nothing to contribute, we can neither please him or disappoint him. What need or want would he have for us?