Hi, Your phal will probably bloom for quite some time, mostly likely a few months. Can you see the roots as all? Is it in a clear pot? Depending on the pot, if it is one of those clear soft pots that is tightly packed I would take a blade or knife and carefully make slices down the sides of the pot about every 1 1/2" around the pot to allow more air ventilation to the roots. If they look nice and green that is. Make sure you allow the medium to almost completely dry out between waterings. If it is in your bathroom it may be fairly humid so may very well take longer than a week to dry out. Also if it is tightly packed with moss.
I like to repot Once it's finished blooming but I have also done it while it is in bloom though you may loose some flowers and buds if you do, the medium is personal preference. But usually either a bark mix or sphagnum moss bark mix. Repot into a container the roots fit nicely without allot of room but not too tight as you will want to give it some room to breath and grow.
As for the spikes, you can choose to cut them back to within 1" of the plant, or cut them back to the first node behind where the flowers started. It's up to you and personal preference and greatly depends on the condition of the plant.
Take a read through the sticky above on Phals abuse. It will give you lots of info with pics as well. I'm sure lots of other people will chime in too, there's lots more to it, I just thought I'd get things going.
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