need baby registry help

✨Amy✨ • Just crazy for my SO and raising my babies together as though they were his and trying to have 1 more!
Ok so with my shower coming up in Feb I wanted to have my registry done before the invites go out. 
I have a registry at RH baby and was going to do one at buy buy baby... 
That should work out ok except the car seat we want is at Nordstrom... it's the only thing at Nordstrom we want so I don't want to start a registry there... aaahhhhh how do I handle this?