Day 31 of flowering. Should fan leaves be a little droopy?

I am on day 31 of flowering, and I switched from a 400W MH to 1000W HPS 3 days ago. I had some heat issues the first day, but got them fixed. After a nice feeding and a couple hours of light, they are looking healthier again, but the fan leaves are still a little droopy. I heard that in the last few weeks, plants will drink a lot more water, so I'm curious as to whether I need to be feeding them more or not. They get 2 gallons of 2tsp SensiBloom every other day as of now. Should I be feeding more, or is what is occurring natural?