Don't push it too hard. As long as the baby is taking breastmilk or formula he should be getting most of what he needs. Try to make solid foods a positive experience and focus on exploring the new flavors or textures. If you push it too much he might resist just because of your reaction.
If your child refuses one or two time you should not get fed up. Infants take there own time to get acquainted with solid food. Give him solid food of different tastes and start giving one spoon and then slowly increase quantity. This way the infant will start liking but never force.