Flooding with a tank like this means there's either not enough airflow or not enough wicking material to keep the juice flow stable.
Well that is not quite right. You would need to explain further.
Tank air flow? increasing that would flood further.
Tube air flow? If vaccuum increased through increased air flow through the tube it would also draw more e-liquid.
I have dozens of BCC tanks and Vape them dry quite often. Just fully emptied a T3.
I also let many sit for days as the flavors are nice, but rich and enjoyed in small portions.
They never give me leaking problems. I did have a T3-mini dump all the e-liquid a few weeks ago. Mod had fallen from a counter the day before. Turned out the tank developed a tiny crack at the base.
Air in = liquid out