Like I said, if you don't read the info posted, I can't help you. Maybe you just don't understand what you read?
A plants leaves are either a source or a sink, meaning, It either makes food, or it stores food. cutting off feeding will cause the plant to take it's STORED nutrients and send them to the buds, exactly the opposite of what flushing is suppose to do. going in with just water the last 2 waterings is not flushing. it's just not wasting nutes when they aren't needed. why do you think buds don't yellow, but the leaf does?