Phal looks very dehydrated and would suggest to

1. Remove the plant from the medium carefully
2. cut the dry and yellow leaves and mushy roots if any
3. soak the plant in a fungicide for 10-15 minutes.
4. soak in a KLN or seaweed extract for 10-15 minutes
5. either follow a sphag and bag or pot it back if your humidity in your place is above 80%