There are super long special drill bits for this problem, home depot
They are 3 feet long, and have a hole in the end of the bit, so make
opening. drill 3 feet or more with a extension, then make new hole, or
install box in this hole:)
You use the hole for holding a wire or string to pull the new cable.
I think they are made by greenlee or soomething like that. also ideal
from going from a wall swtch to the attic or basement