Hello Kyle & Liz! If it were mine, I would check the condition below soil level. If it is too rotten there already, no use adding more soil, better to just save the upper branches of the plant that may still be salvaged.
Yes, this winter has been really quirky. I do not know if you will have similar rain forecast we are expected to have starting this afternoon to weekend, so I would move that plant to a dry area to avoid the rains. Your plumie is compromised with something, so better to keep it dry, still very dormant. I would wait when our temps are stable overnight in the low 50 to mid 50's and that will be sometime in April yet. I know it is so tempting to leave it outdoors, our daytime is okay..but the overnights is the one that hurts it when it gets below 50's often.