Command retracted, I misunderstood the press reports that the Baukindergeld ends at the end of March. The topic is also quite well hidden on the KfW website. Then it should be fine as long as the child doesn't arrive too late. In that case, the 6 months after moving in = 10.10.21 is the deadline for you
How long is it possible to apply for the Baukindergeld?
You can submit an application for Baukindergeld at the latest by 31.12.2023 if you purchased your residential property or received the building permit between 01.01.2018 and 31.03.2021. The decisive date for the purchase is the signing of the notarized purchase contract. It is important that you submit the application within the first 6 months after moving in.