As is the case with most houseplants, the Song of India prefers bright, indirect light. This is partially due to its tropical roots, where it would not often be exposed to direct light. Too much direct light could result in the plant’s leaves burning and losing their vibrant colors, and too little light in general could cause the plant’s growth to become stunted.
Place this plant in a space that can provide a consistent source of bright, indirect light, and avoid those that might fluctuate between bright and low light throughout the year. Once you have found this space, you are well on your way!