Don't know what is wrong

my plant's r 4 weeks into buding i watered them like always and the next day the leaves drooped downward and the leaves r twisting and looked warped but not changing color. i water every 3-4 days i stoped nutes and took the plant and ran tap water through the soil just in case i over fertilized them please help me save my only purple plant!!!!:(

It may take some type for the plants to correct themselves. Its best if you don't go by a fixed watering schedule, smaller plants take less water and less nutrients than bigger plants and hence take longer to dry out.