There is a ZZ plant that seems insistent on passing away it's been making its way to the grave for six months I am watching, helpless to do what is necessary, I do not know what that might be though it feels like it may have to do with new soil rather than watering because I've tried everything on the water front but I'm going to be all right, can understand why letting go is useful, and having a few hearty ones makes the loss go down easier.