There is definitely some dysfunctional behaviour/thinking around alcohol going on her, isn't there? Whether or not it ticks the box for alcoholism.
Having a glass of wine to make you 'sleepy' is not a good idea because alcohol might make you feel sleepy initially but it disrupts your sleep patterns, reduces the quality of your sleep and leads to more frequent waking. So don't do do it.
Your post reads that you had a glass of wine in the middle of the night to make you sleepy. Is that the case?
If the TV volume is so loud that it wakes you up at 1am, then put a sleep timer on or turn the volume down before you go to bed. If you do it just to turn the TV off because you know its on but it doesn't disturb you, don't. Leave it.
Put a blanket downstairs and if he falls asleep on the sofa, cover him up and hopefully he'll stay there. Most people wake up in the early hours if they're asleep on the sofa because they're cold.
I occasionally fall asleep on thebsofa and, if I do, i just stay there. My partner wakes up at 5am for work and I don't want to disturb him. If he won't do that for you, your relationship has bigger problems than the tv being on at 1am.
Both of you stop drinking in the evenings in front of the TV. No one needs alcohol to enjoy watching telly. And, if you do, switch of the TV set and do something less boring instead.
Is the communication in your relationship positive and effective?