You can try to feed a nice big bottle right before bedtime so hopefully his sleep can last longer. But if he does wake up at night it's fine to comfort him back to sleep. Your baby is still small and helpless and you are the number one source of comfort for him. You can't really spoil a baby at this age, and latching is also important to develop baby's brain so try to do it for as long as you can manage. All the best!