Repotted her from the 4,4L pot into a much larger, 20L pot using only the pre-fertilized growmix from Floragard. Adjusted the amount of nutrients since she's in early flowering phase right now. Continuing LST as she develops new branches and therefore attempting to extend her over the whole pot width and beyond, trying to get the maximum amount of mainbuds.
Also bought a dehumidifier (Comfee MDDN-10DEN7) since theres too high humidity for her in flowering phase; especially because there is low airflow and no window in that tiny room (we peaked at 70-80% humidity at night, at ~20°C, before!). We set it up to be in 60% humidity right now.