Do you think the Paph was maybe just finished blooming after 2-3 months?
How does the plant look otherwise?
If it's never been repotted - this might be a good time to do that. I have Paphs in a mix of fine and medium fir bark, perlite, bit of charcoal. I have only been growing Paphs about a year and a half, tho, but they seem to be doing well in that mix. I have been told that Paphs should be repotted annually.
I'm sure more experienced Paph growers will be chiming in - gl