I have written several pages related to regions / zones / districts.
Eastern Development Region https://wiki.openstreetmap.org/wiki/Eastern_Development_Region
Central Development Region https://wiki.openstreetmap.org/wiki/Central_Development_Region
Western_Development_Region https://wiki.openstreetmap.org/wiki/Western_Development_Region
Mid-Western Development Region https://wiki.openstreetmap.org/wiki/Mid-Western_Development_Region
Far-Western Development Region https://wiki.openstreetmap.org/wiki/Far-Western_Development_Region
I hope this will help you edit your data more efficiently on OSM Nepal.
Good luck