Hi Fred. Have seen a fair few catts and laelias in this state, I would certainly say that the pressure is on as the plant is very dehydrated and appears to have drained its storage/ reserves.
High humidity essential and no sun and on cooler side to help plant transpire as liitle water as possible. If you have anything like or near size of a vanda vase, would be good. With some canes and string suspend the plant so its bald base hovers above 1"- 2" of water. the whole plant needs a temporary enclosed humid enviro but room for air to move around. Vanda vase, or clear freezer bag or a 2 ltr pop/ soda bottle. Being bald and dry at its feet it may fight for its life and send out new roots- instinct but also to reach the mini reservoir at the bottom of vase/ or moss if a bag. It will seek a moisture source using its sensors (green tips of roots).
Note, while ferts/tonics/ fungicides etc etc are applied with good intentions the new roots are valueable so lower risk of root burn as green tips will dry, brown and whole root aborted. Roots often show symptoms of toxicity from tap water, fertilizers if not diluted enough.
Often listed under diseases but more an infliction of what we may have done - fusarium wilt - wrinkled. limp thin leaves