I fully understand your difficulties as my baby also woke up several times at night before, sometimes even up to 6 times! Similar to your case, he just relied on breastfeeding to fall asleep. I don't think they are hungry, but relying on our breasts to make them feel secure.
2 months ago, I have tried to "sleep train" him, i.e. let him sleep on his own without relying on breast, bottle, and even not being carried. Let him sleep TOTALLY independently! Miracle happened! After 1 weeks, he was able to sleep through night. Last night, for example, he could sleep from 9:45pm till 5:30am without waking up