V.W.
My recommendation would be to only make her transition once. In other words, don't move and let her sleep in your room in the new place, and then have to transition her to her own room later. Do it all at once and get it over with. There are lots of older posts on this site about how to get them to sleep in their own bed, and how to get them to STAY in their beds (toddler or otherwise, not just cribs). Most importantly, do NOT let yourself get caught up in worry and anxiety (which you indicate you are already feeling) about the change. She will pick up on it and it will become her own. Be excited. Make it FUN. Talk about her getting her own space, where she can sleep with her favorite "lovey" (or two or three, lol). Let her be involved in choosing the colors for the room... is her favorite color pink (or purple or yellow....) then paint the room (or a wall or two, or the bottom half of the walls, whatever) a shade of that color. Even if she picks something really BOLD.. you can always repaint later. Be excited... she'll pick up on it and will be excited too. If you don't present her with the option of using your room to fall asleep, she will just accept it. When you talk about the move, use phrasing like "when we get to our new home you will have your own room to go to sleep in" and be HAPPY when you say it! Her the letters of her name and paint them in her favorite color (or a pattern using the color) and put them on the wall over her bed, or on her door.