Many studies with integrated assessment models agree that the economically optimal way to deal with fossil-fuel CO2 is:

little now to reduce CO2, and then increase those actions in the future.

Do nothing now to reduce CO2, and continue to do nothing in the future.

whole lot now to reduce CO2, and then decrease these actions in the future.

whole lot now to reduce CO2, and continue to whole lot in the future.

Do nothing until everyone now alive is dead, and then have everyone in the future panic.