@mistymirror I'm so sorry for your situation, I'm in a similar one myself.
My DM was diagnosed with pancreatic cancer in the middle of August and in the middle of September was told it had spread to her bowel causing a blockage which will ultimately become complete and she won't survive.
She's just spent two weeks in a hospice, as they thought the blockage was complete, but they managed to organise her medications and ease the pain.
She was discharged back home on Tuesday, with a district nurse once a day, and one carer a day.
The rest of her care is falling to me and her husband.
While she's still functioning at the moment, she needs to be much more sick until they'll re-admit her into the hospice.
They're both struggling to sleep, her quality of life is poor, and she really just wants it all to be over (although is conflicted by the fact that she was a fit and healthy 74 year old just a few months ago, who was helping to raise our children who live very nearby and she sees everyday, and she desperately doesn't want to leave them).
It's so terrible, the anticipatory grief is so difficult to manage while also trying to be functional - helpful to my parents, able to work and raise my children through their own grief too.
It's a lot.