time for nutes?

the two bottom starter leaves look yellow and like they're dying. i have some nute burn or so i've been told on 3 other leaves. any idea what i need to do to get rid of those? i'm not currently using nutes, just the food that was originally in my miracle grow soil. do i need to start using nutes?

usually you wait one month before giving nutes, but others have had problems with Miracle grow. Maybe someone whos used it knows?