What can I do to help my plant?

OK i Have a devil's ivy or sometimes it's called golden pothos (Epipremnum pinnatum) and its a very beauitful and normally perky lately the leaves are starting to be droopy. I put it in the window thinking maybe it was lacking sun light, I only water the plant from the bottom and I spray the the leaves and soil with a water bottle what else can be done or is there a reason why its doing this thanks for any advice.