It's hard to see anything wrong with the plant in the photo. Water it in your shower or bathtub until it's totally soaked. Let it drain for an hour or so and then put it back in the sunny spot. Repeat this once a week for a couple of weeks and see if it helps.

Can you describe how you water the plant?

How do you check to see if the plant is ready to be watered again?

What is that on top of the pot? Aluminum foil/paper?

It’s aluminum foil to keep my dog and cat from throwing the dirt out.

I was given the plants in early summer of last year and they stayed outside all summer long. I was Watering them weekly while they were outdoors. Since fall when They came inside, they have been watered every 2-3 weeks as needed. Usually about every 2 1/2 weeks on average. I attempt To feel down into the soil a bit to make sure they need water. When They do I fully soak them both until water flows out. I do a little water every 5 mins until I begin To see a bit of flow out the bottom.

That sounds like a reasonable plan. It's normal for older leaves to be shed as the trunk lignifies. The struggle to give plants enough light inside over winter is real for all of us tropical wannabes. If it's in your brightest spot, that's all you can do for now.

If you think your cat may be succeeding in using pot for a litter box, that could do funky things to the soil. I'd keep an eye out for that, if the foil is disturbed, as I'm sure you already are.

Indoors with a pot that size and the amount of light it is getting Id agree with water every 2 or 3 weeks.

Thank you everyone. Unfortunately this is the brightest space in my house. We get no direct sunlight in any of our windows. Great on cooling experiences, not so great for my plants. Because I do Bring so many plants indoors for the winter I do Have a few extra clip on grow lights. Would you suggest I put On on this plant? I haven’t been using them because the plants were doing so well, until recently anyhow.

I have been checking the plants regularly to make sure the cats are not actually using it as a litter box. The foil has not been distributed or wet and there is no odor. So I am Pretty sure they are not going in the plant. The dog did more of the digging when they were first brought inside. I took 4 bones out of the dirt before I put The foil on them.

I have attached a few more photos and one of the healthy plant as well, hope it’s more help. Not only is the old growth dying new growth is also dying. The leaves are limp and really droopy compared to my other one.

And this is the healthy plant. As you see the leaves are upright with much less droop.

I would guess the cat's *helped water* the plant. Dying from both ends sounds like it could be salt burn to me (cat urine is a very strong and concentrated Nitrogen)

I'm not positive that's the case, but should I re-pot it with new soil just in case?

It's at least worth checking the root situation. You may have to cut away rot and try to reroot what hasn't been killed. Only one way to find out. Hopefully it's not that bad.

High nitrogen would also explain the big and crazy growth of this one compared to the other one. Especially if this one is near a door, you can almost guarantee it's been marked.

Suzanne is there something else you can put over the soil? like tight bird netting? maybe some old burlap...I say that because the air has to get to the soil and could be a cause of deterioration. Have they been covered for the last months? Dec?

They have been covered since early November. I did Have hair nets over them but they just did not want to stay in place. I can Definitely attempt something new.