How about the align tool with an offset.
demo 30 seconds https://i.imgur.com/NEbFb4A.mp4
3D transform is easy, Came in with Gimp 2.10.18 If OP is using macOS then Gimp might be an earlier version.
demo 30 seconds https://i.imgur.com/NEbFb4A.mp4
3D transform is easy, Came in with Gimp 2.10.18 If OP is using macOS then Gimp might be an earlier version.