Seems like your husband is trying to take you off the thing that he thinks you like / need more than him.
Ask something back that would be as heavy for him to bear and maybe more. What can it be?
You say yes to this deal only if he says yes to what you propose.
What can it be? that you don't say a word to him in all that month?

Please don't think that this is vengeance. It is a fair game, in my opinion. It is not fair that anyone ask you something that you don't want to do and you don't ask anything of him. Please, ask him a sacrifice that would cost him double.