Love and light Dan.
Sorry about your mum's situation. It's one of the hardest things seeing someone you care about suffer. I watched my sister slowly die in 2016 in the worst way possible and it is the most traumatic event of life. I could not even afford to get her good healthcare and live with that guilt every day.
I pray you come out of this stronger. I pray you still have some time to spend with your mum. Love and light