Ficus-indica doesn't seem like the best species to grow in a pot because it would normally become a very big plant. I would expect even a smallish variety of ficus-indica would quickly become top heavy in a pot. Here's a picture to show the size of one pad of ficus-indica in my backyard.
There are a lot of smaller species such as the other one you are growing that would be easier to grow in pots. Careful, because growing cactus can quickly turn into a whole other hobby, LOL. Good luck.
M.
View attachment 299355
Wow....thats a pad!