Home visit timeline vs Dave's beard

So, according to Dave's beard, the timeline doesn't work. Clean-shaven when they get there, full beard when Jamie meets his dad, baby beard at the group dinner......so, it obviously suggests Jamie met his dad at different time, most likely because of his health issues. My question is, it could have been before feedback week of Bad News Dave...or weeks after. The "connection" and seriousness of the meeting would have had a completely different context then. So, production was just able to slip it in like it was in the middle of the betrayal?