Amorphophallus-Forum.de

Hello everyone

I got a paeoniifolius as a tuber in spring, and also sprouted in July. 2 leaves, both about 1m high. The plant stands in the unheated staircase on a glass front (south side). Now I'm worried, because she doesn't want to move in. The oldest leaf seems to turn yellow, but very very very slowly. The other still looks fresh and lively. I watered them ~1.5 -2 months ago a tiny bit. The temperatures depend on the temperatures outside, but they never go below 0°. When digging in to the bottom, it is still very slightly damp, almost dry. When lifting by the stems, the whole earth goes up with it. The roots seem to be in tact.
Can I just let them do at these temperatures? Or do you have any tips?
And is it possible to propagate paeoniifoilius with leaf cuttings? Otherwise, I'll try to do that right away