Donna, I have not been in that position, but my mother and father both were. With Dad, we took him to the hospital to have a feeding tube put in and see what else they could find wrong with him, he had prostate cancer for 13 years, the doctors told me to take him home, there's nothing we can do. It had spread to his, bladder, pelvis bones, lungs, and eventually brain. He was told 2 wks. to 2 months, but the doctor told me to figure closer to the 2 wks. He lasted 3 wks. He was not coherent so him accepting it wasn't a problem, He just wanted to "go home" We took care of him in hospice at a local nursing facility.
Mom was diagnosed 2 months later with inoperable lung cancer, the tumor had wrapped itself around lots of vessels and we were told that it couldnt be removed, but would last 6 months or so. And also told that chemo wouldn't do any good. Mom was told, and she decided to not have the treatments. We took care of her in hospice at home. She made it 8 months. She accepted it ok, she told me what ever happens, just happens. I think it was harder for me to accept than her. she had an enjoyable last 8 months. We made sure what ever she wanted she got, took her places, and she was never alone. In the last weeks of her life when she couldn't get out any longer, she was compfortable, and just slowly, slowed down, to the point of going to sleep, and didn't wake up. It was much more peacefull than I was afraid it would be.
I don't know if this helps or hurts, I do know what your going through, and I hope you can find peace and relax. My very best to you, enjoy life and have no regrets.