Courtesy of Dr. Matthew M. Wielicki, Climatologist:
For those that are gluttons for punishment, here's a study, concluding "that changes in atmospheric CO2 concentration did not cause temperature change in the ancient climate:
https://www.researchgate.net/publication/320123470_The_Relationship_between_Atmospheric_Carbon_Dioxide_Concentration_and_Global_Temperature_for_the_Last_425_Million_Years
Let's start with sea level.
The geologic record has many instances where CO2 and Temperature (T) are uncoupled, for example the Andean-Saharan glaciation, thus we shouldn't have any certain expectation of a measured response in T to lowering CO2.
Atmospheric CO2 concentration has varied from 200 - 7000 parts per million (ppm) or 40x. The percentage range from 0.02% - 0,7%. The planet did just fine at these levels. Low CO2 is more dangerous than high CO2.
Last but not least is heat absorbtion of CO2. The higher concentration of CO2, the less heat absorbtion takes place: