How are your PPM’s so high? What kind of water are you using? My well water comes out at 800ppm, so I have to use RO water which is better because I know exactly what’s going into the plant.
Just get yourself a cheap humidifier from Walmart and take the struggle out of it. You can even get yourself a good humidifier where you can set the RH%. The good ones are obviously more expensive, but you could always just return it in 2 weeks when you’re done with it