Jay, where exactly do you see the thousand years fitting within Revelation 12? Speaking for myself, the only place I can see it fitting is at the end of what verse 17 is involving.
Rev 12:7-13: - 7 Then a war broke out in heaven: Michael and his angels fought against the dragon, and the dragon and his angels fought back. 8But the dragon was not strong enough, and no longer was any place found in heaven for him and his angels. 9And the great dragon was hurled down—that ancient serpent called the devil and Satan, the deceiver of the whole world. He was hurled to the earth, and his angels with him.
The start of the 1,000 years of Satan, the beast, the Little Horn/The false prophet and the kings of the earth being imprisoned in the bottomless pit.
10And I heard a loud voice in heaven saying:
“Now have come the salvation and the power
and the kingdom of our God,
and the authority of His Christ.
For the accuser of our brothers has been thrown down—
he who accuses them day and night before our God.
11They have conquered him by the blood of the Lamb
and by the word of their testimony.
And they did not love their lives
so as to shy away from death.
12Therefore rejoice, O heavens,
and you who dwell in them!
The end of the 1,000 years that Satan will be imprisoned in the Bottomless pit.
But woe to the earth and the sea;
with great fury the devil has come down to you,
knowing he has only a short time.”
The Woman Persecuted
13And when the dragon saw that he had been thrown to the earth, he pursued the woman who had given birth to the male child. 14But the woman was given two wings of a great eagle to fly from the presence of the serpent to her place in the wilderness, where she was nourished for a time, and times, and half a time.
If you want more proof, Jesus confirmed this in the Parable of the Minas in Luke 19. All that you have to do is simply join the dots knowing that the man who goes away for a time is Satan.