Hi, I have a dracaena marginata that is over 40yrs old. I repotted a year ago in a plastic container that had drainage holes in a unique pattern. Apparently, this configuration is easily clogged after a few waterings. The plant had been showing signs of wilt. I decided to let it go through the winter and re-pot it in the spring. What I found was a watery mess. There was no root ball. Most roots had been destroyed. there only remained a few large roots. I dried them with a newspaper as much as I could and re-potted it. It's been a month and I have not watered it since. there is no new growth but remaining leaves look fairly healthy. I've had this plant longer than my kids, I do not want to lose it. Is there anything else I should be doing to help it?