Well it will wilt if its over watered which looks to be the case in pic 2 n 3. Seems you've solved that problem tho, lets talk about your lighting...in veg the plant should get at least 18/6, personally i do 20/4 sometimes. Anywayz it needs more light in veg then change to flower [12/12] when it gets a little bigger bcuz im not sure about the scale of that plant but it looks to small to support any bud to me....as for nutrients, dont use too much if you decided to use it now becuz that plant still looks a little weak

Good luck tho