really very too early you will kill ur babys or badly badly stress them and burn them if you add nutes now. no joke this is not a good idea. i would advise giving the plants nutes in the 3rd maybe 4th week but also it all depends on the soil you are using. if you use expensive soil like canna terra pro+ or canna bio pro + then you would not even need nutes until you flower hope this helps you a little cheers