Thought I'd share what I'm doing w/ my AGA-T2, been on the same coil and wick for the whole week with killer results. What you are seeing below is sort of the combination of two techniques: one involving resting cotton underneath the coil directly above the fill hole and the other "auto dripper" wick design, as it was dubbed.
Where to begin? Well, it's a microcoil directly above the wick hole, I think I used 8 wraps of 30g though I cant remember for sure. The key is getting a nice clump of cotton underneath it, so it's a bit wedged underneath but not too tight, and on either side, clumping it against the coil so the sides, particularly the wires heading to the posts, have contact with the cotton. The critical part is that once setup (and wet), that
a tiny bit of the wick hole is exposed(see picture). In my case, I just use one of my long nails to wedge underneath, and lift a little bit if needed (you dont need the cotton going down into the hole, and it can block the exposed space which will give you red coils after a few hits if it does, so lifting it up a little can help). As long any amount of that hole is exposed, it works flawlessly.
There are two open holes, one underneath the cotton, and the one you cant see on the opposite side. The hole on the right is just plugged w/ some rubber. The back hole has to be open to create air flow or the cotton wont wick and you get red coils. The hole on the right that's plugged, is to be opened while refilling or you wont get any juice into the tank without using a syringe due to a lack of sufficient air flow.
From a full tank to a few drops, I use it exactly the same way. Before every drag, I just tilt so the liquid can reach the wick hole, maybe for a second at the longest, and then take a drag or two. Every tilt will instantly rewick the cotton, and with enough cotton, you'll have enough for a great loooong drag without having to tilt during the actual inhale. Depending on how much cotton there is, there may be enough for multiple hits before tilting, but I have had no harm in taking no risk and just tilting to rewick before every hit, and has worked everytime.
Been using the same piece of cotton all week, between 15ml and 20ml of juice total, and readjusting slightly with each refill if needed to make sure the hole has that sliver of exposure. Can see the coils are pretty gunked up and in need of a dry burn, but it's still performing great. The whole setup is similar to my IGO-L, just with less cotton. The real difference, I just tilt to rewick instead dripping, which is convenient as hell. As it gets gets closer to empty it takes a bigger tilt, more than 90 degrees, which will be visibly obvious and towards the end when you have only thick syrup left, it takes time for it to ooze down to the wick hole.