There are some niyama or rules for Navratri.
- Maintain neatness in the puja place.
- Avoid eating non-vegetarian food during Navratri vrat.
- Make a timetable for puja and follow that.
- Avoid entertainment and other recreational activities as much as possible.
- Avoid maithuna or sexual activities during Navratri.
- Charity is the main aspect of Navratri. Do charity and donation as much as you can.
- Food charity is the main aspect of this puja. A kanya or suhasini should be fed.
- Spend as much as time in Devi Prarthana as possible.