You obviously care very much for your husband. He's lucky to have you for support.
I'm grieving right now too but I can tell you what I need from my friends and loved ones and that is just someone to talk to. Let him lead the way on what he wants to do that day. He may want to honor her in some way or he may want to do something to take his mind off of his grieving. Either way just let him know you'll support him.
Best of luck to you.
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