I am not sure that is how carbon induced greenhouse effect works. The warming has pretty immediate effects and is pretty correlated with the amount of CO2 in the atmosphere. The only warming beyond that (as I understand it) is from positive feedback loops via these tipping points. All else being equal (and without tipping points) if we stopped emitting carbon today, the rise in temperature would also stop relatively quickly. And if we did find a way (by some miracle) to remove carbon from the atmosphere it would start to cool again relatively quickly.