'Soda' is generally considered to be the sugary stuff (Coke, Pepsi, etc). If you replace with soda water (effectively 0 sugar), then it's not unreasonable to sa

'Soda' is generally considered to be the sugary stuff (Coke, Pepsi, etc). If you replace with soda water (effectively 0 sugar), then it's not unreasonable to say that you've given up on soda in a non-literal sense.