Ayla -
No worries, this sounds like many others that have started TSM and you're going to see your numbers start to drop. Just stick to the Golden Rule and take the Nal an hour before you drink.
I don't know what corner of the globe you're from, but have a look at this, you may find a TSM doc that will prescribe:
http://www.cthreefoundation.org/find-a-physician.htmlIf you don't see anything, shoot me a PM and let me know what the nearest big city is, I'll see if I can dig up some options for you. If you're here in the states, with a prescription, you can use GoodRx to get 30 Nal for about $40. Otherwise I think All Day Chemist is about the least expensive overseas source.
Starting out, you should drink when you usually do and what you usually do, but it can't hurt to see if you can drive down the quantity per night that you drink. Don't gulp the first one, sip it and stretch it out. Try to get a glass of water in between drinks. For me, leaving my drink inside when I went out for a smoke really cut my consumption. Others find that talking on the phone has them drinking more, so try leaving it elsewhere if that happens. Don't hold the drink in your hand as much, take a sip then put it down. Leave it and get up to something else for 15 min or so, see if the Nal is helping you to forget about it for a bit.
You may see your numbers drop initially, then climb back up. Don't worry, that's pretty common. Likely, it won't be too long before the blackouts are mostly history.
Well, looking forward to hearing about your progress, stick with us as you're starting out, lots of good support here!