I feeded the plant two times in total, 1ml of BioBizz Bio-Bloom while it was going into flowering, and 1ml of Advanced Nutrients Sensi Cal-Mag Xtra in the first week. After that i knew i couldn't give more nitrogen so i stopped feeding. Maybe a moderate use of PK would have helped but it's fine.
So the plant is small and doesn't need to be feeded a lot.