What country are you in? Sounds like the plant should not be inside. That is the reason for the leaf loss at the wrong time of year, unless you are in the southern hemisphere that is.
You say elm, but there are many different species of elm, the best thing is a picture. If you are able to put it outside in a sheltered spot, keep it watered when it needs to be, that is check daily and don't water if it is still damp. You don't say where you have the plant, but a picture speaks a thousand words, and tell us where you are,
Geoff