I'm guessing he didn't want to tell his family he messed up, his professor was unavailable for the rest of the summer, and he might get a low grade in the class

I'm guessing he didn't want to tell his family he messed up, his professor was unavailable for the rest of the summer, and he might get a low grade in the class for missing the final project. He had been given 2 months to schedule this final review.