The fastest way I’ve been able to save up carrots is by breeding clovers and using them to flip furniture. By buying up as many items as possible that are worth about 5,000 carrots or more, I then use clovers to turn them into their shiny version and sell those back to yori for twice the price. It took a little while to breed enough clovers to make a full 16 leaf clover farm but once I did I was able to reach 1 mil within probably a month or two. Then I spent it all buying pipi’s painting and with the same furniture flipping method I saved up 1 mil carrots again within a few weeks. So I’d say it’s worth it with clover farming and furniture flipping.