Thought I'd try to give a little encouragement.
I've taken Lamictal for quite a while and it is the best mood stabilizer for me that I have ever taken. Sounds like you do have a good pdoc, so I would urge you to be as open and honest as you can to find the best dosage and/or combination of meds for you.
As for sleep, I do have to take it at night because of drowsiness. Yet, it hasn't been enough for me. I do know some people who take it in the morning as it interferes with their sleep. I now take a low dose of trazodone which does the trick.
Regarding the drinking: It's a well known fact that it is definitely counterproductive as it does affect efficacy of the meds. We're not perfect, though.
I do drink at times. It can be especially difficult to resist using to self-medicate when things feel out of control. Curiously, last time I drank I went a little overboard and thought I woke up with a hangover headache. I then remembered I had forgotten the Lamictal that night. After taking it the headache disappeared.
Good luck, and little steps at a time. Sometimes that's all we can do.