My personal go to for over feed/spray/bugs whatever, is generally to spray off all the leaves with water. Flush the pots with clear water. Give them time to dry out a bit, then give them a nice worm casting and molasses drink, allow them to take that up then resume feeding schedule. Anytime you have issues, I would rather it be past the first 28 days, like you are. I think all will recover, one may be a little off. I absolutely love the people here. No one has been condescending or mean in any way. Tons of great advice! Watch for bananas forming in the plant with the most damage, you may have a few to pluck, enjoy your grow