Potting mix plant feeding
I am using Miracle Gro moisture control potting mix in my container garden of peppers/tomatoes. The package says can feed for 6 months. Can I replenish my soil by adding composting ingredients (browns/greens) in small quantities on the top soil every few weeks "DIRECTLY" to my potting soil containing the plants? If so, How long can I keep doing this, as in keep replenishing my soil for reusing the soil for many years?