Have you tried just choosing all bad options? Like the first time you meet him just straight up be an asshole.
Choose:
Hi
Comment on how interesting the play is
Next time you meet him in class:
Compliment his notes
do project with Barnaby in library:
Disagree
Do project with Barnaby again next night:
Go to door
fifth time doing project library:
No dialogue options
That's how I got it so yee, also try not going to spots he goes just maybe avoid him?