it's unlikely to return back from TRT. your body is unlikely to ever produce normal T levels again.
PCT is started when all steroids are out of the body and is started to get back your natural T levels as they used to be pre-cycle. if your T levels pre-cycle are low - there's no point in PCT. So you remain on TRT for life. Unless your body somehow (but very rarely) starts producing enough T levels on its own and you decide to get off TRT.
