Ignore him completely from the time the sulks start: COMPLETELY. The worst thing to do is to try and "bring him back" into the group with "Cuppa tea?", or "Dinner's ready". It's oxygen to him. Just get on with whatever you've planned to do, ignoring him completely. Pretend he's invisible - don't even have a place setting for him. Make your plans for the day without him. I guarantee you, 24 hours of this is the most he can take.
Good Morning Good Friday 29th March 2024
Things you find stressful that other people don't notice.
They don't really care do they