It took me about a week...
I had about half a pack of cigarettes left when I bought my first NJoy kit three years ago.
That killed all of my smokes except for the first-thing-in-the-morning smoke.
In less than two days, I had already found this place and ordered a 510 model.
But the improvement in gear did not help me with that first morning smoke.
Mainly because of the hassle of getting a good hit off the thing in the morning due to wicking issues and other various hassles.
For me, zero hassles on the first morning smoke would never be tolerated, and that was my only sticking point.
ZERO. Any hassle whatsoever was not acceptable first thing in the morning.
Hell, my brain doesn't even work properly for at least an 30 minutes after waking up.
And hassle is simply not an option.
I finally decided to try dripping, and that fixed all my consistency and hassle issues.
That also coincided with when my last half of a pack ran out.
And that was that.