1st grow - RQS Northern Light Auto

Hi friends! I decreased the amount of nutrients given because I realized, much to my deep frustration and sadness, that almost since the beginning of flowering I've been giving her too little nutrients. The chart says "x ml per liter of water" and I was just giving nutrients as if it was only 1L, the rest I just filled with plain water. So the poor thing is probably hungry for nutrients ever since she started needing more than 1 liter of water, and that may have affected the yield. Another thing, honestly, could you tell me what you think of her? I think I'm wasting the seed's potential, I think she could be bigger. But with 8-9 hours of direct sunlight per day, strong winds, and now this nutrient problem... :/ Well, I'll rectify the nutrients and let's wait!