K.V.
you need to keep trying my dear, sometimes they have periods of time when is like they don't want the breast, but don't be overwhelm, I know is easy to say than to do, but keep ofering him the breast, it's much better for him and you too!!!!!!! Maybe if he does not want the breast, maybe B/C he's a preemie, you could pump both breasts and offer him the breast milk in a bottle, always it's going to be better for him. take it easy, it's hard, I know it myself, I'm breastfeeding too, but it's worth it.
congratulations on the baby and on breastfeeding!!!!!!!!