I don't know how to tell you to quit. Some people can quit easily.
Help me quit, I'm about to go straight water and lactose free milk.
My suggestion would be to slowly wean yourself off the sugar by drinking less sugary drinks.
Like, I had a friend who drank coffee with lots of sugar, and slowly transitioned from like 5 sugars to drinking it straight black after a few weeks.
Maybe go with a lighter iced tea for a while. Or drink tea with honey when you get a craving. Sweet, but not as bad, I don't think.