Hi & welcome! Sent you 3 acorns for that wonderful tree, one for each year you've done so well with it. TY for sharing it!
At whatever point in the future it may be decided to repot this tree, you can put the rootball at a tilt so the trunks are more upright in the pot.
For now (and indefinitely, always,) rotating it halfway, weekly or bi-monthly, so the other side reaches for the light, can help keep it more even/upright.
Ficus have latex sap inside, so avoiding getting that on skin (washing if you do or may have, just to make sure,) is always a good idea. A few unfortunate folks get a rash like poison ivy from that.
