2nd baby gender disappointment

I'm 13 weeks, and my son is 22 months, but this will likely be our last baby. I really wanted a girl, but based on our last scan it's looking like another boy. I'm of course still thrilled for this baby and can't wait to meet him, but I'm having a hard time mourning the loss of things like - getting my daughter ready for prom/dates, helping with her wedding, being part of my grandchilds birth. I'm a birth educator so passing that knowledge down to a daughter was something I had been looking forward to a lot. Not that I can't with my sons but it's different and I have no idea what the women they marry will be like (if they marry women or even want children) so I won't assume they'll want me involved. I love my MIL but she isn't allowed near me during birth.