Thanks for your replies
We went up and saw him today and he just looks so much better. He was sitting up when we were there, and even had a sense of humour, cracking a few jokes.
I feel SOOOO much relief! He's still having temp issues, although his last temp of 40+ was at midnight last night and just before we left he was feeling warm again, but nothing like he has been.
He's now been placed in the acute care unit, and also has oxygen. He's been allowed to start on clear fluids and had his first cup of black tea today while we were there.... VERY thankful to be able to have that.
So it all seems like things are getting much better. I haven't heard anything about surgery or anything but didn't want to ask Mum while we were all up there today so might call her tonight.
Just amazed at how much better he looked today.

Thank you for all your well wishes. xx