Enable password policy on domain

Hi,

my current AD enviro is does not have a password policy in place. I intend to create a 60-day password GPO and link it to the domain container. But by doing so, all user accounts will face password expiration the next day as they have been using the same password for quite some time.

Is there any way to enable password GPO without having the users’s pwd expire the next day? The countdown should start from 0 the moment I link this GPO and not expire the user’s password immediately.

I know of AD tools but unsure of which one to use and which particular value to look for to reset. Advice greatly appreciated!