Once four vegetables are tolerated without reaction, you can move onto fruits, again, one at a time for three to seven days. As the fruits are introduced, the cereal and any of the vegetables are still used. To make it easy, you can give cereal and a fruit in the morning and a vegetable with or without cereal in the afternoon, the cereal being used if you have a hungrier baby or one who prefers to have the taste of the two together rather than a vegetable alone.