You may need to train your child to go to sleep
without associating it with feeding
Put him down to bed when he is tired but still awake. Let him put himself to sleep, in the crib alone, with a night light in the room. If he falls asleep, then wakes in the night, he will see that he's in the same place and it is safe to go back to sleep. It will take practice, but you will both sleep better!