I’m curious to know how your grey is doing now and what the solution ended up being? We are experiencing the same thing with our two-year-old grey who we adopted in December. I was initially very against medications and spent the entirety of the first two months doing alone training, but he did not improve at all. He broke out of a wire crate and chewed through two baby gates, so we’ve now resorted to leaving him to the whole house. He does well for the first 15 minutes while he licks his Kong, but once the Kong is empty, he starts to freak out again - panting, pacing, whining, barking, and soiling the house. He does occasionally get to spend the day with my parent’s two dogs, and can be left alone for up to 4 hours with them with no problem. I am in the same scenario you were in at the start where I can’t get another dog because of space (apartment) and money constraints. The vet has just given us trazodone, but I was wondering if you ended up having to regularly medicate yours?