Yes you can get admitted into PDPU and DAIICT through JEE Main.

DAIICT also provides tuition fee waiver to students who secure a rank inside 5000 in JEE Main.

If not through JEE, admission into these colleges is possible through GUJCET. However, you need better marks in board exams, since normalisation occurs for the final result of GUJCET, and these institutes only accept the top students (through GUJCET).