You’re overfeeding nutrients, not under feeding. Week one with autos should be like 75ppm, week two 150, slowly working up to about 550ppm. It looks to me like you’re over feeding and likely overwatering. Dropping leaves is typically too much nitrogen or too much water. That’s why I don’t “top feed” from the top, I feed below the RapidRooter.
Also, why are you using 0.5 of everything? You should be using double your A&B compared to everything else. Overall, you need to lower your PPMS. I’d add water to lower the nutrient concentration.
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