Helping your child move from breast breast milk or formula to solids is a milestone for both you and your baby. However, it can be challenging for some parents. Here are some tips and tricks I've compiled for introducing solid foods to your baby. Do remember, however, that you should follow your pediatrician's advice if you're in doubt.Start with fruits One tip I've heard from various is to start with fruits. Use really ripe bananas, mashed with a fork. Or sweet potatoes (baked, with the insides.