Its a drop in the ocean and I'm going to come off negative here but your up against jets, deliveries on demand from across the globe, mass meat industry and oil companies that will lobby against their destruction and in tern for mass extinction. If you really want to fight climate change move somewhere that won't see the effects, install solar learn to live off the land. An alternative if not too late become a revolutionary topple capitalism the system that allowed us to get to this point and beyond.
Dude, leave the meat alone. Humans have been eating meat for tens of thousands of years and there was never a problem. It's the life style we have which created the demand for cars, deliveries, heavy machinery spinning. Those are bigger enemies. Meat is like you said, a drop in the ocean.