I quit to drink "refrescos" 5 month ago and since then lost 18 pounds! I did not change anything else in my eating and drinking behaviour.
I met a guy last spring who had lost close to 100 pounds in two years by replacing soda with flavored seltzer. He lost it slowly enough where he didn't get the sagging skin. Diet sodas don't work because the sweet taste fools your body into making insulin when it shouldn't. Every 100 calories a day is 10 pounds a year.
I've been taking a break from drinking so much beer and junk food and I'm dropping a couple pounds a week. It adds up.
As for baking from scratch, that's how I put on some extra pounds.