Weird GBTA Not finishing it's split??

[Carmen]

My weird little BTA started a split 8 days ago.
One day it moved half of it's foot onto another rock and started splitting. (See first pic) Then basically split half way and stopped???? For the last week it has just stayed this way or split just a small amount more. It is still connected by a small piece on one side. I can see what resembles 2 separate mouths forming so tried to feed it last night. Both ate but not from the "new" mouths but rather 2 areas sorta near the split.
So should I be doing anything for it to encourage this split to finish??