Bro if you only learn one thing about eating dim sum without blowing your day, it is this: har gao is your friend. Pure prawn, thin skin, steamed. No oil added. A basket of 4 is around 220 calories and gives you a proper 12g of protein. Compare that to one fried wu kok which is basically the same calories for one piece of deep-fried taro.
The skin looks light because it is. It is wheat starch and tapioca, so the carbs are modest and there is barely any fat unless the kitchen is heavy-handed. The prawns are the whole point. This is the dish you load up on first so you are already half full before the fried trolley comes around.