Here's what I do, it works for me but everyone has their own way.
When I open a new atty, I rinse /clean it to get the primer fluid off so there is no nasty taste.
Then I drip 3 drops on the atty and vape. I drip the juice right onto the mesh that sticks up, the portion that the filler from your carts touches. Will take a day or two, or even three, but you will get to the point that you start figuring out when vapor production and flavor start to slack off. Thats when you drip again.
After the first couple of times of use, I will drip only 2 drops. Thats me, might mean I drip a little more often than others but it keeps me from flooding the atty.
If you hear the atty gurgling when you hit it, and there is barely any if no vapor at all, it is flooded. No biggie, happens to everyone. Remove atty, place battery end in a tissue, blow thru mouthpiece. This "blows" the excess juice into the tissue. Blow 2-3 times, put back on battery and vape.
Side note: I'm a cheap ....... so I don't like wasting a whole tissue on blowing out an atty, I use one square of TP from the bathroom, lol.
After vaping like this for a week or two, I get bored (read that ....) and go to the "bridge-less" method of dripping. I use good tweezers and remove the mesh on that hump inside the atty. Sometimes I just form the mesh into a mushroom shape to where I can see the bare metal of the bridge, depends on my mood, but eventuall I get all the mesh out.
At this point the juice gets directly on the heating coil. Does no damage and will still work fine. When the mesh is totally removed I will only drip one drop at a time.
All of this makes for an enjoyable vape for me, but, and this is important, this is for when I am at home relaxing and vaping. DO NOT drip and drive, it is dangerous. Yes I did it for a good while, yes it was a big pain.
I would have to wait for a stoplight or a stop sign when no one was behind me, even pulled off the road so I could dip safely and be sure it got IN the atty instead of my lap.
Use cartomizers for travelling/out of home adventures.