How long will hair shedding continue after stopping a drug that induced telogen effluvium?

I have drug-induced telogen effluvium (clonazepam), and my hair has been shedding for 11 months. I'm nearly weaned off clonazepam now, and wanted to know when I can expect the shedding to stop. Also, if I continue taking it once or twice a week, will the shedding continue? The doctors aren't sure it's from the clonazepam, but that's the best guess. Thanks!