I have an eleaf istick pico 75w with cleito original tank and 0.4 ohm coil. I fill the tank and let it sit for 10 to 15 minutes then give it a few draws without firing and the air closed, then I open the air about 2/3 of the way and I start at 30 w and slowly work up to 45 w, I use 70 to 75 vg juice, I let it rest for 10 to 15 seconds between draws, the draws are usually 2 to 4 seconds long, I keep the tank topped up so the fluid is always above the cotton, and I the coils are only lasting me about 2 days. I've had it about 3.5 days and my second coil is on its way out already. Can anyone add insight? Im vaping about 10 to 15 ml a day I guess. The first coil I used Vape shakes 3mg (70 vg) and the second its decoded mini doughnuts (75vg). Could it be the flavour of the juice is collecting on the coil and degrading the efficiency? Both of those flavours are fairly sweet.