1: Wick type - 100% cotton, sterile
2: Juice type - Usually clean vaping juices (Teaberry is my adv)
3: MLs per day - 5 to 15 (more on off days, less on work days)
I rebuild my coil about once a week but that's more out of just liking to tinker. Not sure how long a 26g micro would last before it would NEED to be changed. One day I may find out
I replace my wick between a couple times a day (if I'm feeling finicky) to once every 3 days or so. Takes about 2 min from start to finish and I keep a pinch of cotton tucked inside my REOs so I can toss in a new wick anytime I wanna.