I don't have a regimented routine, but I vape two or three bottles through an atty, then I remove it and drop it in a little tupperware bowl with an airtight lid and some 99% isopropyl alcohol, and then start a new or previously soaked atty. When I take them out of the alcohol, I just set them on a paper towel upright, threaded end down and let them dry out. Doesn't take long at all. Then I blow them out from the threaded end, screw them on an eGo battery and give a very short dry burn. Just long enough to observe the coils briefly glow orange. If the orange glow is uniform across the coils, I give the atty a few minutes to cool off, remove it, blow it out from the threaded end again, just to make sure any crud that flaked off the coils doesn't stay in the atty, then I put it on my Reo, prime it with juice, give it a few minutes to saturate the wick, and start
vaping.
Sometimes, when changing flavors, I'll use my Shark steam cleaner to blow steam through the atty from the threaded end and out the drip tip end. Let it cool, blow it out from the threaded end, prime with the new flavor, wait a few, vape.
I've found the alcohol soaks are pretty effective IF you don't let the coils get gunked up much at all. A bridge-less atty that lets you see your coil pretty easily is handy for observing which of your juices causes gunk build-up the fastest. Soak 'em before the gunk takes hold and the atty will probably last a good while.