Agree with all of the previous posts.
It might have been more helpful to know how many cigarettes you were smoking right before you quit, to determine the nic level you should start out with in your e-liquid.
1/2 pack per day or less = 6 mg nicotine
1 ppd = 12 mg
1 1/2 ppd = 18 mg
2 ppd = 24 mg
* if using a sub-ohm coil system, reduce the nicotine level by at least half.
It can also be helpful to know what vaping device you are using. Different devices deliver nicotine more efficiently than others. (Ie. Subohm atomizers deliver nic more efficiently)