Nickname for Galaxy (boy )

My daughter’s name is Phoenix Aurora Violet. We like unique, kind of out there names. We’re having a son and I hate pretty much every boys name but we’ve been talking about Galaxy for a boy for years and now that it’s happening my husband and I are trigger shy.

My husband’s grandfather and his dad both have G names (Gordon, Gavin) and we’ll use Thomas as a middle name because that’s traditional for my husband’s family, so I figure if he really hates his name he has a super normal middle name to fall back on and I’ll call him Thomas or Tom if he wants. Am I crazy? I just don’t like any boys names really! 😭