Hey 👋
You have clearly visible sings of lock-out. Red stems is mostly an indication for nutrition issue/ lock-out. For me it appears that your lady switched to flowering, or is about to… so there will be no more huge growth tbh…
Nevertheless you are growing in coco, which means that you could flush your soil, and adjust PH and EC, but honestly with this size you will not get more than 10g dry out of her I guess.
Concluding me personally would propose to start a new growth, to not block your spot under the light, with new soil…
No matter what, good luck with this or the possible future growth 👊🍀🖖