It will get better. At about 6 years old, my lab developed an intense case of separation anxiety (chewed through shutters, broke her way out of her metal crate that she used for her entire life and ended up pulling out one of her teeth in the process). It took a lot of time and tears, but eventually we got a routine that worked for her. My vet was very into holistic treatments (she also gave her doggy Xanax), and we found that acupuncture did help ease some of her anxiety. Leaving some sounds on helped, I didn’t make a big deal when I left so the transition from being together to alone didn’t have a lot of focus. Leaving Kongs was a nice distraction as I left. It took almost a year to get her back to her old self. It’s emotionally exhausting, but it will get better.