Please help, leaves turning yellowish and curling!

The spots look like water damage like you sprayed or got water on the leaves while lights were on (not a big deal) as for the droop it’s either overwatering or underwatering how much and how often do you water

Whatever the cause, light distance or intensity should be decreased to help the plant rebound from the stress you’re seeing. I agree with @GreenSnek’s assessment, I’m leaning on over watering because it’s a common mistake, also pH could be playing a hand in it.

Pic of whole plant might help in this case.