Hi how long does it take for copper levels to get back to normal if zinc made them low ?

Depends: It depends on how high the copper level and how low the zn level. The higher the level, the longer it takes to get it down. However you need to find out why the copper level is so high to start with since there is a disease condition associated with it. However if you are taking copper supplement, the first thing you need to do is to stop it immediately.