What to do with this beautiful but unruly orchid?

[Fallon825]

I have an orchid that has grown to about 3 ft tall (4 ft if I include the blooms). It doesn’t seem to be slowing down at all. It currently has three flower stalks on it and another one starting. What should I do to this plant, if anything? Prune it? Separate and repot it? It’s beautiful, but very large! I know nothing about growing orchids. I believe it got this way from sheer dumb luck on my part!

I am not sure if I attached the photo correctly, but I included a wine bottle in the photo for a size comparison.

Thanks!