Yeshua is the Hebrew name of Jesus.
Yes the WORD was in heaven before the Earth was created but your assumption that the word is Jesus is wrong, Jesus was born a man like we were.
The special spirit that Jesus received at his anointing is the son of man, the true spiritual son of YHWH. The express image of the Father. This is what became flesh. To become flesh it had to be something else first (spirit). This spirit is said to be a form od God in Phil 2. Put into the body prepared for it in Heb 10:5.
That isn't what the scripture says.
The scripture says... "In the beginning was the word and the word was with God, and THE WORD WAS GOD" John 1:1.
"And the word was made flesh, and dwelt among us, (and we beheld his glory, the glory as of the only begotten of the Father) full of grace and truth" John 1:14.
I think that you are in error as to who Jesus is.