If your child: Has started weaning, you should offer small amounts of bland and digestible foods such as rice, potatoes and bananas. Has gastroenteritis and is losing fluids to vomiting or diarrhoea, you should ensure that they rehydrate frequently to prevent dehydration. Instead of plain water, you can give an oral rehydration solution. Follow the instructions on the packet and give small amounts at a time after each episode of vomiting and diarrhoea, allowing some time for their stomach to settle. Is breastfeeding or being formula-fed, you should give less milk each time and supplement with an oral rehydration solution. You do not need to dilute the milk formula.