"The NZS expects all the measures to prevent the spreading of COVID-19 will be put in place before the competition resumes," the NZS said in a statement, without specifying if first league matches will be played behind close doors.
It added a detailed calendar of the remaining matches will be published next week.
The Slovenian federation interrupted the league on 12 March as the country of two million moved into a coronavirus lockdown.
At that point 25 rounds out of 36 in the season had been played.
Currently Ljubljana's Olimpija is at the top of the league table with 50 points, ahead of Celje and Aluminij who have 45 points apiece.