Hi
@Pluxay! Your broken branch is not a problem. In the wild, cannabis is used to be bent/broken/eaten, and usually always recover by driving its energy into other parts of the plant. On a regular strain you would have kept this branch, put it in water and make a clone out of it, but since you're growing an autoflowering strain this is almost impossible. The only trouble you can encounter is tissue infection & mold but this only happens in high humidity environments on unhealthy plants. As mentioned by others, growers often cut parts of the plant, usually with sterlized scissors. Hope this helps, I'll be around, keep us up-to-date and happy growing 👊