Possible to overdry your harvest?

For the first 2 harvests that I've completed so far, I've noticed that my end-product has been on the dryer/crispier side (in a bad way). Here is my procedure: (1) Hang freshly chopped plants upside down in a cardboard wardrobe box (there is really no light penetration into the box and there is no fan or anything blowing on the plants), and (2) Let hang dry for about 6-7 days.

Am I overdrying? Should I change up my procedure at all? Thanks for any advice!

Dry it for 5 days. Depending on how much trimleaf you left on for the cripsyness. Once it dry throw it in a outtight jar.
I dry mine for 24hours upside down with a fan on them. I then clip it off the stalks. Put the buds on screens untill crispy about 3 days. Then throw in a bag and sweat for 4 hours. Put back on the screens for another day or two depending on the tempeture. Have a fan under the screen or pointing at it.

thx man! i'll try a shorter drying period next time around.