I have a Spineless Yucca that is not doing well. My dog got a hold of it while teething about 9 mos ago and while there are new leaves coming up out of the top the base of the stem doesn't look good. Any ideas how to make it recover? I've repotted it in dry soil because it has been sitting in soil that was drenched and hasn't dried up in weeks. I'm hoping that helps some but any other ideas would be appreciated.