One more thing, I noticed from your last picture the two small leaves that are left are looking sort of bumpy and 'blistered'. This is a sign of overwatering. Scroll up to the picture of the plant before. See how smooth the leaves are?
You also should be able to see the whole crown of the plant. In the picture, the two leaves are separated by a bunch of bark. I hope they are joined, under there, but you should pull back that medium, and/or as the others recommended, pull the whole plant out of the pot and check out the roots under the medium. It does have a few good looking roots out on top there.
When you put it back in the pot, just set it on top, don't bury the roots. If it won't stay put, tie it down so it will be stable. If it starts up growing again, it will send out more roots and they will attach to the pot so they will hold it.
