Regarding the economics study. I would suggest you to quit and do something at least you like. You will never return the time and money you spent, but you can at least stop wasting them in the future. But this is just mu opinion! Depends a lot on your life situation. In my life, I went from Electroncis engineering studies, through microcontroller programming and general programming, to entrepreneurship and finance. It wasn't aways fun and joy, but taking it small, helped. I studied/did what I needed, regardless how much fun it was.
Being behind 1.5 years after 2 years of a degree doesn't sound too promising. Either drop out now or try to recover that loss. It is possible to recover, but you have to be really motivated, and you won't have much time for anything else.