You said "Jesus existed in heaven before the creation of anything".
I said, "There was no heaven before creation".
What do you not get about GOD being greater than anything, including heaven?
There was no heaven before GOD created the heavens and the earth so there was no heaven for Jesus to dwell in before creation.
If Jesus 'dwelt in' a so-called 'heaven' before He created anything else, then that so-called 'heaven' would have been greater than He and because GOD is greater than all things, in your logic that so-called 'heaven' would have been GOD because it would have been greater than Jesus, but in truth GOD/Jesus is greater than all things and therefore Jesus did not dwell in a so-called 'heaven' before the creation. According to the Bible, heaven is a created realm. GOD is uncreated. He is the Creator and is before all things, including heaven.