If you can put your plant closer to the light, which will help dry it out faster. You could also raise the temp with a heater. Just don't over do it.
You really want better soil, something with perlite in it or added too.
Peace out
Sagging leaves like that usually indicate over watering. Rule of thumb if you can stick your finger in the dirt and the soil feels wet then you do not need to water :)
Peace out