First, sorry that this happened. Looks like rtn from the tissue loss in various areas. Once it starts, very difficult to stop. Witch hazel dip is about 50/50 success rate. Look at your nutrients, light level and if you had any alk swings.
Here to hoping ! The tissue loss has seemed to stop and the polyps are still extending. Before there were definitive lines between tissue and skeleton but now they seemed to have faded into each other. I hope that makes sense( it does in my mind ).