You know, my first daughter, her name is Claire and we call her Claire Bear (like care bears) and my sons name is Grant, so my hubby calls him PooterSchmoo lol, and I call him pooh bear or pooh, and my daughter calls him Boo, lmao...it's so cute... ahaha So really, when you see your baby, something will come out of your mouth, and it'll stick!
Like booboo bear, pooh, sweet pea, buddy, prince, princess....i wouldn't worry about a nickname till then really.
But those are cute names!
"Cade" is really cute. How about "T" for Tatiana? I was always trying to come up w/nicknames for my son before he was born, but ended up calling him "sweet pea" for some reason - lol!! It just came out one day and stuck. Usually thats how the best nicknames are born. :)
You could nickname your son CT (his names initials) or your daughter Tati. Those are the only ones I could really think of. I'm not a huge fan of nicknames myself. We are naming our daughter Mikayla and my SIL is so proud of herself for coming up with the nickname "Mickey" but I think Mikayla is too much of a pretty name to have a nickname. My SIL also calls her daughter like 6 different names, including by her middle name - she also has nicknames for her middle name that she calls her by. That's too much for me. But I guess whatever names come out we'll just go with it to see how it sounds.
Cade is cute for Caden, my cousin's son is Caden and they call him Cade sometimes. And Tatie maybe. Or the nicknames can be something completely differant. Our daughters name is Natalia Vallerie and DH's family tried to call her Nattie which we don't really care for so we call her bug or buggie instead. But our daughter calls herself Talia and my mom picked it up. So you never know what it will be. Good luck!