Again, Abby, good luck with your baby. I love fiddle leaf trees. I've grown them from seedlings by the 100's and air-layered my "mother" tree dozens and dozens of times. I've had my tree for 28 yr., and for the first 25 yr., she grew in pots. In fact, she was in the same pot for over 10 yr. when I moved to Vero Beach. Because I had to move her inside in the fall, and then back outside in the spring, I had to reduce her overall size 2' each and every year. I air-layered her branches constantly, supplying me with more plants and keeping her size in check. When I moved, she was about 6' tall. If I had been able to grow her in the ground, she would today be a 30' tree. After spending six months acclimating her to full sun, I finally removed her from her pot (destroying the pot to release her) and planted her. She was then a 7' tall tree. She's now been in the ground for two years and she's now a truly majestic tree. Here's photos taken last March and then in Oct. She was 12.' tall in March and now is 15' tall.
Ficus lyrata