I had this nice cactus that is labeled Crested San Pedro cactus, but it looks nothing like the ones I see online. It has been raining a lot and I forgot to put the cactus into a dry spot so it began to rot. I went and cut off the good pieces and sprayed them with hydrogen peroxide and rooting hormone and have been waiting several days for them to callus over, only to see them rotting. What do I do?