回複：我會找律師的. 可律師說我當初犯的錯誤(沒要PRIMARY)法庭是不會理會

The court will think the father provides a more stable family environment, two parents in the house and a sibling.

I don't know law. I would think, if you want to spend more time with your child, the best chance is to move to where your child primarily lives. As you said, you moved back to US for your child; then move again, at least, it will be a shorter move this time.