2 weeks in the window put your plant into budding cycle, put your lights to 18/6 or on 24/7 veg cycle they will come back to vegging

sounds like fungus gnats, between that & the mushrooms , & the leaf droop its evident you water too much , which is also causing you unhealthy plants
water the plants when they dryout with neem oil & sprinkle some garlic powder on the soil and hang a couple "No Pest Strips" for the returning adults

they need to be fed, start off @ 1/4 strength ferts and slowly work up in strength

cut back on your watering amounts & frequency & check the PH of your water optimum ph for soil is 6.5 - 6.8ph