-Child's CSPA age = the child's actual age when the priority date is current - your I-140 pending time. If the CSPA age is less than 21, then your child can file I-485 together with your I-485 filing or after you file your I-485. When your child file I-485, his/her I-485 is safe (the age will not affect the I-485 anymore). So, the longer your I-140 pending, the better for your child's to file I-485.
8老師,非常感謝您的回答。我還有點不是很清楚,我I-140批下來後就可以給我孩子file I-485嗎?是不是要等到排期到才能file I-485?這個priority date(排期)是從什麽開始算?根據您回答的內容,隻要開始我的priority date的時候,我孩子小於21歲就可以嗎?非常感謝