18 weeks, but I'm not sure she's ready.

Use some string to hold up the heavy branches to prevent them from snapping, Can tie them to the support polls of the tent. Judge your harvest window buy a few things. Trichome colours. Bud density and Pistils dry back. Ideally aorund 80% of the pistils have dried back, the buds are nice and dense and the plant is drinking less water and not growing all that much, The trichomes are mostly milky with some amber in the mix. I like mine about 10% or less amber. The colour is degradation of cannabinoids. more amber, more THC getting turned into CBN. Even cloudy has some degradation. You may also notice the plant is fading in the leaves as well at this point. you can easily harvest before this, you may find it will have a different kind of high more heady vs body. Its also good to note some strains do no amber up really fast and some produce lots of fresh pistils that can sometimes make this harder to judge. I'd like to see more photos of the full plant. Some of the pics in the diary don't look ready other look ok. Hard for me to say how much time is left. It looks like your plant was really stretched out from lack of strong lighting, this is something you can try and fix in your next grow. Good Luck!