Yep.. 3 weeks more at least. You'll be surprised how much more the buds will fatten up.
Get that magnifier so you can view the trichomes up close... If you want a "head" high, harvest when the trichs are mostly cloudy... If you want a more "couch-lock" body high, let them go a little longer and harvest when the trichs change to a more "amber" or yellow color.