Sorry, had to get DS to childcare! The possibility of an EC discussion thread is being toyed with now
No need for awe! DS is old enough to know that when you gotta go, you gotta go, so if I have to put a pause on him to pee DD he's ok with that. He'll also get me the chamber pot if I'm tied up and need it brought to me! It's not that hard, and is about as hard as changing nappies, really
I think it's awesome of your DS to be 'getting it' already! It's textbook, really - you've set him up beautifully, good one!