In Matthew 5:17-19, Jesus said he came to fulfill the Law in contrast with abolishing it, so it doesn't make any sense to interpret fulfilling the Law as essentially the same thing. There is nothing in the Bible that speaks about fulfilling the Law is that sense, but rather the Bible speaks about God's Law as being eternal. Rather, to fulfill the Law means "to cause God's will as made known in the Law to be obeyed as it should be" (NAS 2c), which is precisely what Jesus immediately proceeded to do six times throughout the rest of Matthew 5. In Galatians 5:14, it says that anyone who has ever loved their neighbor has fulfilled the entire Law, which refers to obeying it as it should be, not to something unique that only Jesus did to fulfill a contract and do away with the Law. In Galatians 6:2, it says that bearing one another's burdens fulfils the Law of Christ, which again refers to obeying it as it should be, not to doing away with it. In Romans 15:18-19, it says that Paul fulfilled the Gospel, which referred to causing the Gentiles to fully obey it in word and in deed, not to doing away with it.
In 1 Peter 1:13-16, it says that we are to have a holy conduct because God is holy, which is a quote from Leviticus, such as Leviticus 11:44-45, where God was giving instructions for how to have a holy conduct in accordance with His holiness, so the only way to do away with these instructions is to first do away with God's eternal holiness. The God that we serve has said that it is an abomination for His followers to eat pork, so do so at your own risk.