it could be several things really...they do run hot expecially if you're chain
vaping but generally it getting real hot is a sign that it's not running as efficiently as possible...
it does sound like it's flooding....it also sounds like the polyfil in your cart is in need of being changed...
Here is what I would do...
1) change out the polyfil in the cart...check into any of the cartridge mods like PTB, ZFM, or blue foam (my preference is the blue foam)...until then I'd try dripping...
2) blow out the atty as best you can...and then
2a) put it back on your battery and while gently blowing into the atty pulse the button on and off...continue to do this until the atty coil is glowing uniformly across the entire length of coil (you'll be able to see it on both sides of the bridge)
2b) stop blowing on it and it should get to uniform glow fairly quickly...
3) at this point let it cool a little and reprime it with about 3 drops of
juice on the bridge
reasoning being that if you're using a lot of tobacco flavored or dark colored juice you build up a lot of particulate gunk on the coil and it gets way less efficient...so you burn that off every so often and it'll get better..
the filler materieal if you're only dripping 3-4 drops in it..well that's kinda gunked up and it's wicking efficiency is shot...so until you can replace that might as well save yourself the headache and drip directly onto the bridge and vape through a blank cart...
EDIT: like the above poster said...there's also a possibility that the atty could be going bad...if you have a multimeter I'd check the resistance...standard joye 510 should be in the neighborhood of 2.2Ω and SLb and knock offs around 3.5Ω