can any1 help!!!

i had spider mights the neem oil got rid of them witch is great but all my plants have went droopy i have since learned that i gave them 2 much neem so think thats my prob has any1 got any idea how 2 bring them back or stop them getting any worse the leaves are curling under aswell think thats 2 do with me over watering but, im growing in cana coco with cana A&B nutes and i have 2x400w hps lights 22" away oh yeah im 2 weeks in 2 flowering aswell, help would be great.