The British Nutrition Foundation has information and resources available on healthy eating for younger children including:

Feeding toddlers/pre-school child - guidance on feeding young children which includes types and portion sizes of food and drinks.

5532 –a-day - Toddlers need a diet made up of foods from the four main food groups, in the right balance and in portion sizes just right for them. This guide is designed to help parents and carers choose a healthy, varied diet for their child.