Yes , you can apply for the pmsss jk scholarship for 2021 if you all the required documents. After the admission confirmation in the allotted college, you can cancel your admission in GDC ( Government Degree College ).
Read a similar answer about Npr students click on the link below to read .
NPR students can apply this form if they have domicile of JK and follow all other eligibility criteria . - pmsss.in
Hope this helped