My DS1(3) currently splits his time equally between me and ex. At the moment he is happy with this arrangement, as are me and ex. During a conversation with a friend today, she basically said that this won't work when he is older and at school etc as will become too much hard work and too confusing for him.
What do I do then? What do other people do? I don't really want to cut ex's time (and he would not be happy with this), but I don't want to see DS any less either!