At 80–90% humidity in Week 2, that’s too high and could be the reason you’re seeing strange leaf curling or slow growth. High humidity at this stage can interfere with the plant’s ability to transpire properly, which may cause leaves to curl, droop, or appear slightly twisted. It also creates an environment where mold, mildew, and other pathogens thrive, especially if airflow is limited. Ideally, during Week 2 of veg, you want your humidity in the 55–70% range, and if you're in early flower, even lower—around 45–60% is safer. Try increasing airflow and gradually lowering the humidity over the next few days to reduce stress on the plant. If the leaves don’t perk up within a few days of adjusting your environment, it might be worth double-checking your light intensity and root health as well.