I don't see why you wouldn't be able to cut the 1mgs in half, but check with your doctor. When I started chantix, i followed the directions exactly, and by the time i was starting the 1mg's i was so ready to quit. I think that's the way it's developed to work, it gradually builds up in your system, so you don't want to smoke. give it a shot, i think you'll be suprised at how well it works. It did awesome for me, I smoked 2 and a half packs a day. I couldn't go more than two hours at a time without one. It's been a month for me now, and I NEVER crave a cigarette. When I smell other people smoking, the smell nauseates me. it used to make me want one..I heard someone call Chantix "magic beans". I believe that is true.
Good Luck,
Emily