@NdibeRaymond raised an important point here #968 (comment) about why the change password feature should not be available on the edit profile page but on a different tab related to account settings.

So, this issue is about designing the new account settings tab. The "Account settings" menu option can be added on the user sidebar above the logout option. Upon clicking the account settings menu, it should open the change password form.

Ideally, we have a UX design for this feature first before the implementation step.