prince ed of york rescue with spider mites?

[NeoOrchid]

Hello:

I received this sad little rescue from the Internet yesterday (during the blizzard no less) and it is really in terrible shape. Potentially a beautiful Prince Edward of York phal, it is covered in large brown blotches and rust spots that I fear may be from spider mites (of which I have never experienced either problem)

I have placed this plant in a small pot of moss and it is isolated.
I've been recommended to mix 2tsp cooking oil, 2 tsp soap, 1 gal water and spray leaves 2-3 weeks

Please fellow orchid lovers, help me fix this little fellow! I take great pleasure in caring for rescues (for some reason- must be my rn nature)
Thanx!

Neo