Well, I shouldn’t have spoken so quickly. There was actually a start of bud rot on the top bud, as visible in the video. (I had opened it beforehand, it didn't break by itself) I removed the damaged part and a bit more before hanging the plant. I let the two bottom branches grow for a few more days as planned, since there are still white pistils shooting and the buds look healthy.
I weighed the plant with the stem at 250g. I think there’s about 100/120g of stem (I weighed a small portion and did the proportionality). So, I am expecting around 150-175g of wet buds for this harvest, counting the two remaining branches.