I doubt at this point you need to worry
Those branches would not have produced much anyway
and if it gives the plant less to tend to (other than those great looking buds) it should be a good thing.
I have been taking off the yellowing leaves once they look like there are no more stored nutes in them myself.
I keep a fan blowing at the base of the plants as well for air.
I noticed that you have no hairs turning brown at all yet.
Yoinks! Sativa mature slow.
Stretchett is looking prime now tho dude
such great work you are doing.