You should not water with a spray bottle especially in flowering. = mold plus you're putting lots of minerals on the leaf surface. Fine for the occasional feeding correction but I don't recommend it as a habit. Plain water, fine, in veg only. But even then, be sure not to get to the point where you are actually REVERSE feeding, or leaching nutrients OUT of the leaf.

Fertilizing at every feeding is fine, you just need to keep an eye out for signs of stress and scorch, and most likely want to add a flush to your schedule... like, feed-feed-feed-flush-feed.... etc.