Q.Can I save my ponytail plant
I have a 12 year old ponytail plant in a pot that is kept indoors year round. Last year, the bulb started to shrivel after my hubby jarred it a bit loose. Then leaves started to drop off after turning yellow/brown. It doesn’t look to healthy, as the new leaves are a light green instead of dark. The bulb is still loose in the potting soil, and I’m afraid it’s dying a very slow death.

Obviously something happened to the roots and they are not either taking up water or is the soil to soggy?
I may recommend actually repotting the plant and giving the roots an inspection.
Here is a link with information on how to repot the plant.
https://www.gardeningknowhow.com/houseplants/ponytail-palm/how-to-move-ponytail-palms.htm