Drooping leaves

There isn't much you can do to fix and overwatered plant. If you have an air pump you can stick it into the sub to give your plants some 02..as that's why they are dropping. Not from too much water but because o2 can't get in as your sub dries out (as you should always let it) 02 is drawn in thru the sub down into your roots and you have healthy plants and less risk of bad bacteria going on. 2-3 days. Let it fully dry out. You'll notice the weight as GG said. And them them roots breath Then so you don't overwater again just until you get the mes of it. Pick 2-3 pour points and on each feed change it up. This way you don't have to wet your whole sub while keeping roots drinking and taking on o2 to sustain the light Roots need to breath to my friend. Good luck