Just by looking I can tell these a far from been done.
I've done many Barneys fems.
They take from 56 days to 77 for some.
Reading the profile.. and been 6 weeks into flowering. What you're 40 odd Days in. The Gelato is a 65-70 day in flowering
.
And the CK is a 7-8 week flowering plant
Going by this is just a recommendation
But, your buds are big. They're just entering a key stage. Ripening.
This is were the plant will pack on THC, don't be to quick just cause you want bud..
Fems are time consuming in flowering
If you want fast ones there are many that can be done under 56. Fastbuds does FF.
Barneysfarm are not quick growers. They're true gentics..built up (not just crosses that breeders are throwing together) not these ones anyways.
Gelato is a strain of its own. As is CK.
Not quick turn arounds pal.
If in were to go by harvesting looking at the tops (as there is growers out there that do that) they'll tell you. They're far from ready.
1 some parts are a good bit into ripening others are just coming into it and wouldn't by surprised if the bud was still soft down below.
Anyways keep pushing on with NPK, favouring PK of course. Just a small bit of N. Some ppl will just use full pk boosters in ripening and let the plant take any N needed from the leafs around. (Tis advanced to be able to do this. Not advised until you know more about Trichomes ambers % and cloudy clear ratios and finding the balance if its a sativa a few clears and as we know the more cloudy the trichomes the more THC produced but be careful on that note as if you let them all cloud up the chance of a high % of ambers is not good unless growing a cbd strain. As amber is signs of thc degrading telling you that part is in the window you may like.
Good luck keep pushing on. 10-21 days. Get a loop or phonescope to check trichomes % rates.