Best practice for short term use of neuroleptic medication

Here's a question that's been puzzling me. There is a growing consensus that says that neuroleptic medication, if administered at all, should be of short duration and used only when and if necessary during periods of acute psychosis.

My question is, where is the best practice that defines "short term?" Are we talking one month, three months, one year maximum? What is meant by "short term?"

Does anyone out there have some information on this topic?