[Question] strategy for multiple table alters

Imagine the migration alters two tables, but if I read the doc correctly gh-ost supports single table alteration. I understand that there's no "good way" of handling this kind of situation because even if you run migrations simultaneously (two instances of gh-ost), at some point you'll end up having one table migrated while the other one still in migration.

Do I assume correctly that the only right way here is just not allowing such migrations in the first place if you care about zero downtime?