Weaning Off Tu-Tu?

XP found it disgusting that Little Arielle's saliva was drooling everywhere. Not sure why she drools a lot when she is sucking her tu-tu aka pacificer.

He tried to keep it away and told Little Arielle not to take it anymore. Surprisingly, she agreed at that moment and XP told her that she is a good girl.

I guessed it would take a while for her to completely wean off her tu-tu. Hmm I wonder when would that be??