Repot and fertilize when in bloom?

[jennster]

I'm the proud new owner of a cymbi. I'm not at home so I can't tell you it's name. I got it from TJS and it is a lovely greenish yellow. The media appears to be plain potting soil of some type. I know this is a huge nono but since it is in bloom I don't want to disturb the flowers. The same goes for fertilizing. My understanding is that they are heavy feeders. Should I feed while in bloom. Thanks for any help.