Q.Sago Palm Yellowing Spines.
Indoor, no direct sun. Purchased from a big box store in rather tight soil. Wonder whether I water too much. It never sat in any water. I repotted it with different soil – more like an orchid mix with bark to allow drainage. Reduced watering to once every two weeks. It continues to yellow. Is there a fertilizer I should be using or something to rescue? Thanks very much!

Certified GKH Gardening Expert
Follow these care instructions below. Also, when you water, water deep enough that it drains out the bottom, but don't let any water collect beneath the container. Then let the soil dry out before watering again. Also, they prefer bright light. You can fertilize once a month with an all purpose houseplant fertilizer. Here is more:
https://www.gardeningknowhow.com/ornamental/trees/sago-palm/how-to-care-for-sago-palms.htm
https://www.gardeningknowhow.com/ornamental/trees/sago-palm/sago-palm-watering.htm
https://www.gardeningknowhow.com/ornamental/trees/sago-palm/manganese-deficiency-in-sagos.htm