Help me save my phal from suicide-- help!

[Cookiemonster]

As I came home last night, I realized wow my orchid isnt looking too healthy ....

I've had this one for almost 3 weeks- Im really new to orchids and didnt understand the basics , I live in arizona and i water about once a week (tap water) no fertilizer and its blooming, but I was looking at the blooms and they look tired/somewhat wilting--- does this mean lack of water/nutrients or too much, slightly around the edges its a brownish color (the leaves) I want to SAVE this plant, Im not going to let it commit suicide


Im thinking the culprits this far--
-Tap water is too hard, need different water
-Needs nutrients/fertilizer dissolved in reverse osmosis or rainwater
-Possible root damage/something beneath the potting
-Needs humidity, misting in the morning or possible humidifier in the room

If anyone has any recs, suggestions, I'd appreciate it, I was thinking about repotting to check the health but I've heard it puts TOO much stress to re-pot during bloom time


thanks everyone !

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