Credits are often treated as administration that happens after the creative work. In practice, they are part of the creative infrastructure: the system that lets everyone be named, paid, and invited back.
Capture information while the session is still fresh. Legal names, performing names, roles, publishing details, and split conversations get harder to reconstruct with every passing week.
Use one source of truth for the release. A shared split sheet or controlled metadata document is less exciting than a group chat, but it prevents three different versions of the same answer from reaching distributors, PROs, and collaborators.
Good catalog hygiene compounds. A clean first single makes the tenth easier. It also gives potential partners confidence that the people behind the music understand both the art and the responsibility that comes with it.