I would wait at least a week, before adding any nutes and when you do give them a lot less than the recommended amount. If you're running fox farm's nutrient line, it isn't hard to burn em with the grow big, so I would start small working up to 1/4, then 1/2 of the recommended dosage on the feeding chart. I end up using 1.5-2 teaspoons throughout veg (using ocean forrest soil) and get nice results.
If you're a month into veg and got light green almost yellow leaves, they need more nitrogen. If they are dark green, you're good and might want to stop upping the amount, especially if you're starting to see clawed leaves and a little nute burn at the tips.