Create multiple record duplicates from Base A into Base B

I’m looking to have Base A’s Content duplicated 3 times into Base B. The reason being I’m using it for social media, and need the original concept record in Base A to be duplicated for 3 social media platforms in Base B. Each duplicate will hold the post content for the concept record and can have different publishing dates. The end result is to have the calendar show gather one publishing date for all three platforms.