I noticed you moved it from your rocks to your sand
Try not to move it too much especially if it's in a weakened state.
I would rx dip it
Then place it back in in a low flow medium light spot
I had a frogs pawn do this same thing after a bad water change it looked like it was going downhill fast but it's made a huge recovery.
Check your water params keep up with water changes and do the rx dip.
Lps are fighters!
He can still make a turn around!