it is easy to think you arent overwatering them and really are, im not saying i know for 100% certainty that you are but the signs they are showing are signs of overwatering. if the soil was too hot they would be burning on the outside tips not drooping downwards like they are.
sometimes the droop is unavoidable as it is just the strain, sometimes its not over watering but whats in the water you are giving them. if your giving them tap water is it city tap or well water? maybe try watering with distilled water for a bit and see if that helps then you can assume that it is something in your tap water that is causing the "droop"