Don't be embarassed, I haven't posted anything about him.
But, he has been producing excess cecals for two weeks or so, so I reduced his pellets to nothing. This morning he was very 'meh' and not really wanting his food. He's had some Metacam and is eating, but not much. He had a time where he stopped going to his water on a different level, but when he got it on the same level as him he started drinking loads (presumably to compensate).
He is my biggest stresshead. We call him OCD bunny because everything has to be 'just so'. The tiniest thing throws him out of whack.
I'm worried this is the first signs of Cocciodisis because his poos from today are supremely odd, but realistically I think that he possibly has dental issues and we may need to discuss arthritis. Off to the vets tomorrow, hopefully first thing.