We can schedule the switch to PC 2.0 once the clone site is set up and you have tested your code changes on the clone site. Live site PC2 upgrade is an activity of 2 hours and we have best practices in place to execute without downtime. And to set up the clone site, TAT for the team is about 10 days from the day we finalize the mapping in the input template.
The total time taken for this PC 2.0 for a customer largely depends on the customer efforts. Once we have set up the clone site, they need to do the dev in their end and complete the testing before scheduling the live site upgrade.