Newbie here!
i started the flushing process today for havesting it next week, but one of my plants was already showing signs of overwatering. Can I go on, or should I stop watering her?
Always let the soil dry out. Even if you're at the end, you have to keep going just like at the beginning. Let it dry out first, and then Flush!
When it's time to harvest, let the soil dry out first!
Cheers, hope to help you!
Flushing at the last 2 weeks or last week dont mean you need to provide excessive amounts of water (thats only 1 time if you are facing a nuteburn) just water your plants as always but without nutrients