It's never too late if you seriously consider all your options Ie:
Full nuclear energy development with SMRs
Fusion reactors research
Full transition to electric/hydrogen vehicles
Economic sanctions to countries with grid power coming from carbon/ non renewable resources above a certain percentage
Full development of lunar/cis lunar infrastructure/space
Large scale deployment of solar mirror arrays designed to reflect incoming sunlight, built using lunar regolith as raw materials source
Blowing an 88 megatons hydrogen bomb under the sea, below 8 to 12 Km under the ocean floor surface to trigger about 30 years of carbon capture in a second
You know, easy stuff
And so on