Our little girl refuses to take a bottle or cup while I am at work which is really stressful (believe me, we have tried everything), so I want to start giving her some rice cereal mixed with my milk as early as 4 months to see if it will see her through (or at least help) till I get home. All the advice is 6 months but the rice cereal says 6 months. Will I be damaging my baby by starting at 4 months?