au
I hope you will get them back on track. I am an optimist when it comes to weed- they have strong trunk, it's not dead yet, still holds leaves although clawed= so it might bounce back

and listen guys here- medium have to be the same- otherwise you have two types of watering in one pot- mess.
I would take them out- put in nice medium instead of that coco- soil as in the start- and light mix of some type and slowly try to revive them. Proper watering with nice ph water will do miracles. I hope. And wish