My ds starts the night in his crib so DH never hears him before I do. Once I hear ds wake up I quickly potty then go get him and get in the guest bed with him. DH didn't really want to co-sleep but I didn't want to nurse sitting up in the middle of the night and try to put baby back in his bed so it's a good middle ground scenario that works well for our family. Not sure I have any advice for you. Sorry!
Caroline-happily married to Keith since 4/27/02; momma to D (5/10/05), M (2/10/07) and S (3/25/11)