Yes, you can make bagoong ahead of time. Making it in advance allows the flavors to develop and intensify over time. Since bagoong has a long shelf life due to its fermented nature, you can prepare it days, weeks, or even months ahead. Just store it in an airtight container in the refrigerator, where it will stay fresh for up to 3 months. This makes it convenient to have on hand for quick use in various dishes or as a condiment.