A Bubble in God's Existence

Phyisically, the universe is a bubble in God's existence. The FINITE energy that used to occupy the bubble became Jesus Christ. Since Creation, the Father became the infinite God outside the bubble, and the Son acted as the FINITE God inside the bubble. At this point, it becomes clear that Jesus was begotten by the Father, and that the energy of Jesus is not infinite (but can be replenished). When the Bible said that God created the heavens and the earth, it was actually referring to Jesus Christ actively creating the sun, not the Father.

Epistle of Barnabas 4
13 Then he dearly manifested himself to be the Son of God. For had he not come in the flesh, how should men have been able to look upon him, that they might be saved
14 Seeing if they beheld only the sun, which was the work of his hands, and shall hereafter cease to be, they are not able to endure stedfastly to look against the rays of it.
15 Wherefore the Son of God came in the flesh for this cause that he might fill up the measure of their iniquity, who have persecuted his prophets unto death. And for the same reason also he suffered.

So, would a finite entity (Jesus) need rest after consuming so much energy in creating all the stars in the universe?

Yes, of course.

From whence did Jesus replenish the lost energy?

Where else but from the Father's infinite supply of energy.