The Global South does not consume more resources in aggregate. Have a look.
“The richest 10 percent of people produce half of the planet’s individual-consumption-based fossil fuel emissions, while the poorest 50 percent — about 3.5 billion people — contribute only 10 percent. Yet those same 3.5 billion people are “living overwhelmingly in the countries most vulnerable to climate change.” ”
People are already not eating meat and using ACs by being poor. There is very little for us to reduce. Our fates are tied to rich countries because they are causing the problem.