Not doing pct on time

So I was talking to my buddy who was cycling test 400 for 12 weeks and upon talking to him I learned he had not taken a AI or had a PCT protocol. You could definetly tell by how bloated he was. Well I got him set up for pct as he was finishing with clomid and nolva and got his dosages for him. I talked to him a couple days ago asking if he had started and he said no and won't be starting for another 3 weeks because he and his wife have a trip to Mexico. My question is what will be the difference from starting in three week(which will be 5-6 weeks after last pin ) compared to starting 2 weeks after last pin

Any info out there

He will be shutdown longer. Reduced test in his system so he will suffer from low test symptoms. If his trip to Mexico is supposed to be 'romantic' it likely won't be.