Keep in mind that perfect is the enemy of good! You don't have to switch all at once. Start adding new tokens to a better manager and see if/when you get around

Keep in mind that perfect is the enemy of good! You don't have to switch all at once. Start adding new tokens to a better manager and see if/when you get around to migrating the ones that are currently locked into Microsoft. That way, the task will get smaller rather than larger over time :)