What the heck happened to my string of buttons. Have had this for almost 3, probably 4 years. It’s been growing in this pot with an echeveria and haworthia for almost 2 years now and it was growing really well until I started noticing a little over 3 weeks now that its pads were sort of desiccating. Just randomly drying up like that out of nowhere. Before that, I did notice that it had these brown marks on them but figured it might have just been burn. Now the plant looks like it’s on the verge of collapse and I have no idea what suddenly happened