Is my plant OK? White/yellow leaves crispy

Harvest now, she is at the end of her life and won't do anything much anymore. Waiting any longer will result in harvesting a near dead plant.

For the conditions it is in, it doesn't even look too bad. The high temperature + low humidity means the water is almost sucked out of the plant, resulting in quite a lot of stress. But it's a tough plant and it will complete the flowering cycle! Give it some more time, like 2 or 3 weeks, the trichs are still almost all clear.

30c is too high and 30 humidty is too low. Also looks like you've had PH issues.

Ende Blüte würde ich nicht mehr viel tun. Ich denke du hast ein PH Wert Problem sowie hartes Leitungswasser was das Problem ist. Etwas mehr Nahrung und Licht wäre auch nicht verkehrt ( beim nächsten Durchgang, jetzt Futter zu geben wäre unnötig, lass sie noch 3 Wochen stehen und schaue ob sie dann fertig ist 👍🏼