Hi there Michael ... so sorry your having such a worrying time at mo ... l wish l could help or advise but no one here can tell you an answer to your question .. everyone is different and some can hold on longer and some quicker then expected ... maybe have a word with his oncology team to make things a little clearer ... McMillan also have help with advice and they came out to my brother in law when he was on palliative care ... they were a lifeline ... and I've used them to chat to while I felt confused about something ... Chrissie x