Aboard, its great that your here on the OB, our community is world wide as well as different growing conditions.
Taking a shot at this without
s but if your dend has stopped blooming and you see new canes coming up, the yellowing of the leaves is most likely on the adult cane. Eventually the older canes will dry up and at that time can be cut with a sterile knife. In the summer time its not always good to allow your dend to become totally dry and yes they are lovers of humidity. Post some
s so we can determine exactly what we are seeing, I am merely taking a guess...