Yes, I'd agree, but you're also in that "window" where it makes sense to start taking small samples every couple/few days and chop when you think it's ready.
Also, not sure how you're counting the 7 weeks. Most of us start counting when we flip to 12/12 but, I believe, most of the seed breeders give their finish times based on when the plant starts showing flowers, usually about 7-10 days after flipping 12/12. That being said, I only use the breeders times for a general idea and am a BIG fan of sampling to harvest based on personal preference since some people like more couchlock than others.