Over 2 nights? Not a drinker myself but a carer for a family member who has always enjoyed one glass a night. Visiting this morning and they've definitely drank a whole bottle of wine and a third of a 1 liter bottle of whiskey, Over the the past two nights.
Over reacting to alert their main health professional, who has previously offered alcohol support if needed?
Yabu - not a huge amount, it's okay.
Yanbu - can't hurt to mention it.