How to save a Phalaenopsis orchid with no (or with few) roots plus cutting the stem

I have received this Phalaenopsis orchid from a neighbor to save. As you can see there is only one aerial root, the orchid is dehydrated, has limp, leathery leaves and looks like it will die. But I think hope is not all lost :) Here is my method of saving sick Phalaenopsis orchids with no roots, or with very few roots.
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🌸 Other things I use:
Various organic mixes from rePotme go.missorchidgirl.com/Agqj48
Fir Bark - Reptibark from ZooMed
Fertilizer and supplements:
MSU Orchid fertilizer for osmosis / rain water go.missorchidgirl.com/XQ8yO6
Slotted pots from rePotme go.missorchidgirl.com/Stjj80
LED shop panels & LED kitchen tubes from Leroy Merlin, 4000k
Orvibo WiFi Smart Plugs amzn.to/2MLSR7T
Shelf units:
Lerberg, Mulig, Omar from IKEA
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