What actually got me through the DSCI Certified Privacy Professional exam was using the DCPP-01 question set from CertBoosters to test myself again and again, instead of just reading through the material once and hoping it stuck.
I went over the syllabus properly first, then kept working through those timed sets until my weak areas started showing up clearly. Redoing the same topics after each round is what really fixed the compliance and cross-border data parts for me.
If you're wondering what comes after clearing it, there's also an overview of the career path and benefits tied to the DSCI Certified Privacy Professional certification, worth a look once you're through the exam: https://www.certboosters.com/dsci/path/dcpp