Before the adoption is finalized
Timing is everything here. Until a court signs the final adoption order, the process is still open, but how much room a birth parent has to change course depends on how the consent or surrender was given. In New York, a consent given before a judge is generally final once made, while one signed outside court can be revoked within a short window. In a private placement, even a timely revocation can lead to a hearing about the child's interests if the adoptive parents oppose it, while a timely revocation of an agency surrender generally voids it and returns the child to the agency's care, not automatically to the parent. Acting quickly and in writing, through the channels the paperwork specifies, matters far more than the reason.
When adoptive parents step back
Prospective adoptive parents can usually withdraw before finalization, although an agency contract, fees, and the circumstances of the child's placement affect how that happens. If a child is already living with you, the transition needs to be planned with the agency or the court, not arranged privately. In a stepparent or relative adoption, the petition can generally be withdrawn before the court rules. Gather every signed document, including consents, surrenders, agency agreements, and any notices you received, and keep track of when each was signed and before whom. If an agency is involved, ask it in writing how its own procedure for ending a placement works.
After the final order
Once the adoption is finalized, cancel is no longer quite the right word. The order is meant to be permanent, and setting one aside is uncommon, generally requiring a serious defect such as fraud in the process, with the child's welfare weighing heavily. A birth parent who believes consent was obtained through pressure or misinformation should raise that promptly, since delay makes it much harder. In a first meeting we confirm exactly where the case stands, which documents were signed, and what deadlines may still be running. We also discuss what is realistic, including contact arrangements that some families agree to after an adoption.