Change the coil once or twice a week, change the wick once a day.
Only vape my DIY goose juice and i get through about 3-5ml per day. Currently using a UTA2 on an SX Mini M-Class at 350F, 34J. Build is 2 strands of 0.25mm ni200 twisted, 7 spaced wraps around a 3mm drill bit, wicked with Muji.