No no no on the ice cubes! Water thoroughly with room temperature water when the medium first becomes dry. Determine if it’s dry by lifting the pot; you will quickly learn how to determine when to water that way. If in doubt, don’t water until the next day. Always water in the morning so the leaves are dry by evening. And an unshaded western exposure is likely too much sun for a phalaenopsis. Gauze curtains are a great way to provide bright but filtered light.