DD is nearly 12 mo & about to start nursery. She is BF but has had one bottle of formula at night for the last month. Want to switch to lunch & bedtime bottles of whole milk soon as she's had mixed reactions to formula (sleeps better but vile poos & occasional vomiting).
How do I do this? Can I just introduce it straight away in one go, or do I need to get her used to it gradually somehow?
Thanks!