RQS Critical Feminized-First time grower

On April 30th I have planted the seed of Critical in a jiffy pellet and kept it in the propagator. Maintained temperature and humidity. Once it sprouted I have transferred the pellet into BioBizz light mix. First week of the grow went pretty good. I have adjusted the things constantly trying to find the best way to provide the ideal growing conditions. I have started with the lamp to close, at 40cm and light intensity of 35kLux. That was too much and she started to show signs of too much light exposure. I have raised the light at 90cm and 8kLux she responded very well. I have transplanted it early in a 3L pot since the initial container was too small and the roots quickly became visible at the bottom. She have has been transplanted the first time but I have made the mistake of saturating all of the medium. Next day I have transplanted again into dry medium and followed the relevant watering technique for a small plant in a big pot. I am currently struggling with humidity in the box, it being at around 35%. Therefore I keep the propagator box on top of the pots until my humidifier arrives.