What to do?

They need some defoliation and lollipop, you can easily cut the first 1/3 of the plant and some major fan leaves. At this stage you can also use a ScrOG net to even the canopy, you can see my last diary to see what I'm talking about. You have some yellow leaves in some of them, maybe nitrogen deficiency but not for sure ... Defoliate and lollipop them and wait some days to see how they are reacting, that should be enough. If the yellow leaves continue adjust your nutrients.

If you can measure the PPFD of you lights: Pick the lowest PPFD your comfortable with for a bud to receive, cut everything below it off. Otherwise: The super bushy plants: 1. remove all fan leaves that point towards the center of the plant. 2. From the Top, leave 2 fan leaves if they aren't completely covering another bud. If leaf is covering another bud, tuck or cut it, your call. 3. Look down your plants to see which leaves are blocked ng light or buds. 4. After the top half has been manicured, kneel at eye level with your plants and find flowering stems that are way behind or too small to finish out in 5 weeks and cut them at the base of their branch. If you want an example of a lot of removal and what that looks like, check out my Nutter Butter x Pistachio diary in the flower weeks (you don't have to like them or anything, just trying to help). A couple of your plants look like they only need a few leaves removed and some of those pics look like the plants need to have a ton removed. I didn't remove enough on my first grow and ended up with like 2 gallon bags of popcorn. Gotta defol and get rid of those low younger branches if you are cutting and harvesting all at once.