Limp Leaves and Some

[Orchid_Granddaughter]

I am a beginner at all this Orchid business. I have a phal, as pictured in the photos.

I have a few questions about it so I thought I'd just lay it all out.

My first concern is that the leaves have begun to wilt and go limp, and I'm not sure why.
Second, I'm quite sure it needs to be repotted and I'm not sure where to start with that. I isn't getting anymore buds, but it is still in bloom, and has been since August.
Third, the flower stem, as you can see, is very long, and when I do repot it, am I supposed to cut it back? Other websites suggest cutting it back to 1". Is there a specific way to do this?

Sorry for the bombardment of questions, I hope you can help, and thanks in advance!