That's not the way it works. Only your husband can offer testimony for himself in a court.
Good luck with your situation. If you believe you may wish to hire a lawyer to help, please feel free to contact me. DISCLAIMER I am a lawyer, but I am not your lawyer unless you come to my office and we sign an engagement agreement. The answer provided here is for general purposes only, and does not presume to correctly address your particular circumstances. My answering this question does not create an attorney/client relationship.