Can my production environment be upgraded sooner once my non-production environments are done?

Yes. To have your production environments upgraded immediately after completion of upgrades in your non-production environments, respond to the maintenance notification ticket that Acquia sends for your non-production environments, stating that you want to move forward with your production upgrade.

Acquia makes every effort to accommodate your request based on the availability of open maintenance windows and other scheduled upgrades. Ensure that non-production environments are tested immediately after they are upgraded. This mitigates any risks involved with upgrading your production environments on an accelerated schedule.