Hello! My chicks are 4-6 days old. I am bringing them outside for a few minutes a day, and when I do they are pecking things in the grass. The chick grit I have says 2 weeks old. Do they need it if they are outside and might be eating dirt or grass, or should I wait til 2 weeks? They are inside 23 hours a day and only get chick starter/grower and water. No treats at all. Thank you!