Advice on nute burn on leafs 1 week after last feeding

I'm 3 weeks into flowering and am using fox farm big bloom "organic" and bat guano with a npk of .5 10 .5, 1 week after last feeding the leaves look like this. Do i need to flush? could i continue with a low dose feeding? i've been gone for a week and haven't been able to keep an eye on them

more potassium less phosphorus. potassium builds strong buds! maybe a little less nitrogen but thats good for the leaves and stems.