vonnie
Welcome to the forum, you might want to have a look at the following FAQ which explains where everything is
Welcome to Benefits and Work Any information that your husband wants to be considered by the Tribunal panel must be with them no later than two weeks before the date of the hearing.
What you send will be copied to the DWP, this could result in the Decision being revised in your favour but it is rare for this to happen so I would not bank on it.
Gordon