Is the palliative care team involved? This may be a team at the hospital or a local hospice or Macmillan nurses. If not, get on to the oncology nurse or GP ASAP for a referral. The palliative/ end of life team will organise any practical equipment needed such as commode, proper medical bed, inflating mattress, etc. They will also be skilled at managing pain relief if dad gets very uncomfortable towards the end (although not everyone has a lot of pain). They will also know how to start those really difficult conversations that your mum doesn't want to have with you. I have cared for 3 people at home at end of life - with the right support, it can be a beautiful thing to do for someone you love.