Zoe, there was a reason you couldn't find that answer. Only you will know it after you know it. I know, not much help.
I smoked 3/4 PPD. In the beginning I went through 7.5ml a day at 36mg. Now I'm at 5ml a day at 30. Now some of this is because I smoke American Spirit Non-Filters and the rest is how I vape and my waste. (Waste is the
juice that never gets vaporized due various things.)
Now, I've seen folks who smoke 2 PPD go great on 3ml per day at 12mg.
There is such a huge difference between smoking and
vaping you may as well as how many gallons of gas equals a bale of hay.
So, after you get your PV and
juice, order more juice, but try different flavors and strengths. Only you can find what works for you and how much it takes to work for you.