Thank you for responding! I did repot her a couple weeks ago. Her roots are in great shape by the way! She has one big drainage hole with gravel in the bottom the pot. I use a moisture meter to measure. I water her about twice a week, whenever the meter is right between dry and moist. I never let it actually get into the dry zone.

Re-potting out of the growers pot has never worked out for me, the plant goes into shock and then has to acclimate to new soil and a different size pot. I don't use a moister meter, I use my finger or a chop stick. Hope that helps.

Older leaves do that sometimes. It's possible it didn't get enough water at some point before you got it. For me, it's been rare to have more than 2-3 healthy non-drooping leaves at a time on a Colocasia when indoors. In the summer I can get barely 4 leaves.

When one of the leaves that grew after you got it becomes the 3rd or 4th oldest leaf and starts dying off, see if it browns at the tip or more uniformly. If it dies off more uniformly then you're probably giving it ideal care.