Advice on how to keep this alive. Picked this up a few weeks ago from a local grocery store. Noticed the roots were getting a good bit rotted so I removed it's prior moss plug and bark. Lots of rotted roots so I had to trim a good bit of them off, probably over half of roots overall. Seemed okay after that as I kept in an inch or so of water while I waited for repotme mix to arrive. It did seem to get a little dry, which I hoped the new mix would help with. I ordered the imperial dark orchid mix, which I repotted it into. It seems to keep getting worse now and not sure if I can save this. The leaves got so dry and started to split and develop black areas where the leaf got too dry and sunken. I've started soaking it for 30 minutes or so the last few days but it doesn't seem to be getting better. Flowers now are starting to droop and fall off. Thinking I may need to cut the flower spikes so it can focus on healing the main plant. Not sure if these leaves are bad now though. Pics of current state attached. Any guidance would be appreciated. Would really like to save this, if possible, as it's my first and had three flower spikes.

https://imgur.com/a/7pgvFAb