What am I doing wrong any suggestions?
Your NOT doing ANYTHING wrong!!
I was in the very same situation you were in myself just two weeks ago..
Those last few cigarettes...let me tell ya, it's hard letting go.
I actually, as a 'newbie' myself started another thread because for the life of me, I couldn't let go of those last few. The anxiety alone was more than I could take.
Here is a link to that thread. http://www.e-cigarette-forum.com/forum/new-members-forum/643653-i-am-taking-back-control.html
Now, I'm not sure how much you were originally smoking prior to cutting down, but the 12mg that your currently using may very well be too low...especially as you make this initial transition.
I was smoking 2 packs a day, full flavor...I started with 24mgs, but it was too strong (made me cough), so I went down to 18mg of nicotine and this is the level of nicotine I'm currently using.
There are no two ways about it..putting those last few ciggs down is probably the hardest thing you will ever do BUT...there will come a time, I promise you, that you will decide to take that final leap of faith and put the last few ciggs down for good.
Good luck to you and congrats for cutting back, that is a HUGE achievement in itself. ((HUGS))