Bro that teh ais you order without thinking? Condensed milk plus sugar, that is 150 calories of pure sweet before you even touch food. The tea leaves contribute basically nothing, it is the sweetened condensed milk that turns it into a calorie drink.
Three teh ais a day is a meal you drank by accident, around 450 calories you did not even chew. If you are trying to lose weight and cannot figure out why it is stuck, count your drinks first. Most people are shocked when they add it up.