Dear leaner,

Yes they do reduced the syllabus for 12th the haryana board or hbse has reduced the hbse syllabus ,for upcoming exam

You can see the reduction syllabus in the official website of hbse board which is mainly reduced for science, commerce,artsans common subjects .

Here is the link go through it to see the syllabus .

https://www.google.com/amp/s/school.careers360.com/articles/hbse-12th-syllabus/amp .

All the best.