I left my aloe plant with a friend for a few months, and he has seemed to be overwatered. The poor guy lost all of his roots to root rot, and he is losing his color. The leaves are flat at the top, but bumpy at the bottom with some of them browning. Although he isn’t in the best shape, there seems to be new, heathy growth from the middle and it doesn’t look too bad where the roots used to be. Is there anything I can do to save him?