Go through these in order and stop at the first one that applies. If you are reading this for someone else, answer for them.
Call emergency services immediately if someone who has recently stopped or reduced alcohol develops confusion, severe agitation, hallucinations, a seizure, collapse, fever, difficulty breathing, or extreme shaking and sweating.
Seek urgent medical advice before stopping alcohol if you may be physically dependent, especially if you have had withdrawal seizures, hallucinations, or DTs before.
This is for planning a safer withdrawal, not a reason to continue drinking without support.
Routine follow-up is appropriate after hospital discharge, even when recovery seems to be going well.
It can cover sleep, mood, nutrition, memory, physical health, and longer-term alcohol treatment.
The article also says
Do not leave a confused or severely unwell person alone.
Do not let them drive.
If a seizure occurs, move nearby hazards away, cushion the head, and turn the person onto their side when it is safe.
Do not restrain them or put anything in their mouth.
Every sign above is quoted from the sofidex article on Delirium tremens. If you are not sure, err upward — it is always reasonable to be checked.