Oh, my mistake! Thanks for letting me know the ID.
It currently sits around 4 meters away from a a south-east facing window. It gets a lot of light but never direct rays. It used to sit in my very bright north facing bathroom and again received no direct light. This is when it started to decline so I moved it into the living room (I thought the humidity was too much).
I ensure the soil is completely dry at least 2-3 inches deep when I water and the plant never sits in water. I allow the water to drain out every time before placing it back in the outer pot.
Do you think I should remove the smaller plant and repot it separately?