This is an interesting question. You need a skilled and experience lawyer. Look on the site for a lawyer. Also, go to N.A.C.B.A.'s web site.
You will have to declare under penalty of perjury that you and your spouse are living separately and have your own monthly household expenses. The Trustee will likely object if you are legally separated but still living under the same roof and sharing all the same monthly household expenses. Contact me if you have further questions.