First off Gongrats on your tall budding gals !!
Your main concern is getting those cola tops away
from the surface of the glass.
so at this point, the stretch will stop and the buds
get fatter. I was in your same situation last crop.
What I did was hung "S" hooks on the string
tying down the colas, which pulled them down just
enough not get the sun burn.
Perhaps that can work, good luck.