FWIW: these types of password rules are discouraged by NIST -
Eliminate Periodic Resets
Many companies ask their users to reset their passwords every few months, thinking that any unauthorized person who obtained a user’s password will soon be locked out. However, frequent password changes can actually make security worse.
It’s difficult enough to remember one good password a year. And since users often have numerous passwords to remember already, they often resort to changing their passwords in predictable patterns, such as adding a single character to the end of their last password or replacing a letter with a symbol that looks like it (such as $ instead of S).
So if an attacker already knows a user’s previous password, it won’t be difficult to crack the new one. The NIST guidelines state that periodic password-change requirements should be removed for this reason.