I don't think so, no. But you can delete a child. But that requires using cheats. I don't know if you want to do that, but if you do, try Controle - Shift - C. Then type testingcheatsenabled true and press enter. Now if you click on a baby or a child, you should get a delete option. Hope it helped.
no it did not help me
If you're willing and able to use mods, the Woohoo Wellness and Pregnancy Overhaul mod by Lumpinou includes the option to put children up for adoption. You would have to have your Sim discuss it with their partner, if any.
If you're not or are on console, you can go into manage households and move the child to another household and make believe that the child was adopted by the other household. Youcould even change the child's name in CAS as part of this process.
Forget all that considering it didn't work for me I'm just going to neglect a child until he's taken away.
