Amending complaint

I filed original complaint. Amended it but did not title it SECOND amended complaint Just complaint. Now I need to amend a third time but atty for the other side will catch the error when I title the Third complaint. She will notice then that there was no SECOND. Do I need to file a notice of errata for the SECOND one
with the third ammended complaint? Thank you!

Also we are in Discovery phase

You can file a notice of errata for the second one, but there is not a rule that requires it.