Thanks, @swparenting – it was unclear to me from the posts above if the scoring methodology had changed from when my kid took it. Then it was +1 for each right answer and -1/4 for each wrong one. In most cases though, a guess is probably a good idea if you can eliminate an option or two. But as you note, you are playing the odds.
And no, we don’t know this kid enough to suggest a best way. There are some good ideas for a week, some great encouragement, and then some stuff that can’t happen in a week. Just trying to get all the good minds and helpful folks to focus on realistic solutions because it feels like this family is working hard at giving this a good shot.