Hi Meggy and welcome to SR!
Take your time and get settled in
have a look around
do a little reading
and some research here and there...
I would like to add that
anyone drinking a large quantity of alcohol
is risking their life if they
attempt to stop cold turkey
without direct medical supervision.
SO before he tries to cold turkey
or whatever -
please let him know that
a doctor needs to supervise
and advise him
on the best way to go about it.
Okay
safety lecture over.
Welcome!