He has NO IDEA about potential risks of abrupt discontinuation of antidepressants. Google: "mirtazapine; discontinuation; effects"
"Brain zaps", skin crawling sensations, and even seizures are quite possible. A previous answer follows, and resources and advice about addictions may be found at http://your-mental-health.8m.com/blank_30.html Effective, natural treatments for depression, and anxiety are shown on pages 1, b, and i. You will have your work cut out for you, just with the alcohol, and drugs, so I'd focus on them now, and when you are clean for at least a few weeks ...
TAPERING OFF - DISCONTINUATION - WEANING OFF: Dr.s are quick to prescribe, but often know little about discontinuation. You may well be proceeding too fast.
I'd be wanting to taper off more as follows: first week 90% dosage; following weeks: 80, 70, 60, 50, 40, 30, 25, 20, 15, 10, 7.5, 5, & 2.5%.
One way is to get a mortar, and pestle, and crush tablets to a powder; put it in a long, thin line, and work out correct proportions, perhaps cutting the line in half once, and then repeatedly (measurements need only be approximate).
A more accurate way is to dissolve them in water, and use a graduated medication measuring container, from a pharmacy.
I know Lexapro have a liquid version, suitable for this purpose, but am unsure about Paxil.
Another option is to replace the Paxil, 10% daily, with Prozac; stabilise for a short while, then wean off the Prozac (said to be considerably less troublesome, for most people). Check out http://theroadback.org/workbook.htm about yours. ~~~
Note: Mirtazapine may not be as bad to wean off as Paxil, or Lexapro, which are notorious, so you could probably cut the above times by around half, safely