Honeywort, Blue Shrimp Plant, Blue Wax Flower 'Purple Belle'

This is by far one of my favorite plants - it's so beautiful! That being said, both of the two years I've grown it, about this time of y...Read Moreear it begins to develop brown leaves towards the bottom and looks a bit spindly and tired. I've looked up info on how to grow it and find conflicting information - some say to water regularly and keep somewhat moist, others say it is drought resistant and needs little water. I've opted for the first recommendation, as it gets droopy if it isn't watered at least every other day depending on the temp and rainfall, which this year has been high temp and little rain. I've fertilized it 2 - 3 times since May, so I don't think I've over-fertilized it. Still, it's looking a little sad. Any advice? Anyone else have experience growing Cerinthe? Oh, I've been able to collect a bumper crop of seeds this year! I'm thrilled!