If growing, all is well... autoflowers need a lot less, if not used to them. Sounds like what they are planted in is set for a while. You might want to wait for a slowdown in growth or slight fade before beginning any regular feeding.
i caused a toxicity in 2 different grows... the 2nd i was smart enough to correct course quickly. I just don't like the taste of autoflowers. Thought it was my maltreatment, but 2nd one was healthy and still tasted like butt.