Just got a useful tip from my Aunt regarding my dying-plant-situation!
Per Aunt Dar: Beginning of the day, get the tray out from your automatic ice-maker (if you have one).
Dump half-a-container's worth of ice onto your plant
Done! The plant will get water more efficiently throughout the day, and spread-out throughout the day. This also prevents scorching the roots as sitting water can get so hot in the middle of the day. Hope it brings my cilantro back!