I was not a part of them, nor were they originated by me. First, you have to establish clear priorities. The result of all these deliberations should be a plan of action executed unhesitatingly and irreversibly. Pack your things and go. Contact him through your lawyers.
Narcissists are poisonous.
There is no way to leave such a situation in stages. There is no respectable retreat. Many women are worried about the possible consequences of such an act. Maybe you are not. They usually do not act on them or act half-heartedly so as to fail.