Hm, my Dream Queen looks different from yours. Maybe phenotype? It looks like you might have been over feeding as I see some curling downward on the leaf edges, which could have possibly caused them to mature early. 6 weeks is pretty early for Blue Cookies, they are at around ~65 days flowering which is a little over 2 months, but yours already look harvestable.
Dont take my nit picking too seriously, these guys look dank as fuck. Try sticking the whole plant in water after you decide to pull em from your tent and let them sit for a day in the dark. You will probably see them bud again.