Since what month and year have you been using this method without stopping?

For how long have you been using this method now without stopping?
Kodi ndi mwezi komanso chaka chanji chimene mwakhala mukugwiritsa ntchito njira yakulerayi mosadukiza?

Mwakhala nthawi yayitali bwanji mukugwiritsa ntchito  njirayi mosadukiza?