Dear Lucy
At the age of 6 months babies are just supposed to be getting introduced to solids (starting with infant porridge, e.g. rice porridge, etc). If your baby is already eating finger foods you may have starting the solid food process rather early. At the moment stick to Boudoir biscuits or plain rusks. Fruit such as apples and pears need to be washed, peeled and pureed at 6 months - it is still to early to give such a small child pieces of fruit which could cause choking. Bananas should be mashed. Wait awhile before you give your son finger foods that are difficult to handle. Stick to pureed, mashed fruits and vegetables, yoghurts and porridges right now. Click on 'Child' at the top of this page and then on 'Nutrition' and read the articles on food intake of infants, and small children to get an idea of what and how much they should be eating.
Best regards
DietDoc