I think 6 drinks in one night is not moderation. One or two is.
Drinking alot and then abstaining has been shown to affect the brain. It is called binge drinking.

If you have symptoms from drinking any alcohol then don't do it.

There are many posts here about this subject that you can search.
I explain about products of fermentation and congeners in those posts.

Type in "alcohol" to our search function on page one of this forum.
Or use the word "congener".

Alcohol which contains YEAST is more likely to trigger PN symptoms IMO. You are drinking aldehydes that the yeast produce during fermentation, and aldehydes are not good for you.

BTW, There is no test to prove anyone's PN is from drinking or not. If your doctor went out on a limb and told you, yours was not I have a problem with that with 6 drinks in one evening! People usually underestimate their drinking data when discussing with doctors. Doctors know this and therefore in their minds actually round up to a higher amount in their heads.

The mere admission of alcohol in a medical interview, is common enough to get a premature diagnosis of alcohol induced PN. We've seen it here, where some posters come on who have been sober for YEARS and still their doctor will not test for other PN
causes!