Wow! You poor thing...I understand the 'not human' feeling you get from sleep deprivation. It is hell.

I would be inclined to agree with amberj, and perhaps try to take things in steps. Why not start now, or this week with putting them in the same room together. Perhaps you could put a mattress on the floor between their beds and you and DH alternate who sleeps in their room, so at least one of you gets a full nights sleep every other night. The person in the kids bedroom is going to have a rough time of it, but it should get better with time.

Night weaning scares the bejeebers outta me, so I don't even know how to help with that one. Maybe that could be your first step? Perhaps you could get DH to help with DS for a week and you deal with DD until the night weaning is successful?

to you. It sounds tough. We're all here to support you though!

GL