Face Recognition on Photos - Photos being saved under wrong person

There’s the function to have photos saved in an album under a person’s image. Essentially it recognizes the person and puts it under their album. Then you can make videos, etc. using that persons album. So, my phone was asking me if a bunch of photos were pictures of my son and I kept clicking yes, then it asked if a picture of my new baby girl was also my son and I accidentally clicked yes. Now all the photos of my daughter are getting saved as my son. I cannot for the life of me figure out how to undo this. I need to tell it that my daughter is not my son. Please help!!! I need an album for each of my children but the image recognition is recognizing them both as the same person. Thank you!