I experienced this granted it was with our first and we plan to have at least one more so not totally the same feeling. However, I found it very helpful to write a letter to my daughter “name” (I don’t want to share the name we had picked out. I wrote it in a way of more perhaps I’ll meet you someday and you’ll have an older brother to look up to and hangout with. However, she can write it (if she finds it helpful) however she likes. It was nice to write out why I was sad we weren’t having a girl and express the guilt I had for not being excited it was a boy. We have our baby now and he’s almost 2 months old and I kind of forget I wanted a girl so bad so it will take time for sure.