Need Guidance on Applying for PGWP and TRP After Study Permit Expired

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I recently graduated and was in the process of applying for my Post-Graduation Work Permit (PGWP) when I realized that my study permit has expired, and it is now past the 90-day restoration period. I did not notice this earlier because I assumed it would be valid until my graduation. My Temporary Resident Visa (TRV), which I applied for at the same time, is still valid.

Given this situation, I understand that I need to apply for a Temporary Resident Permit (TRP) alongside a work permit. Is it feasible to handle this process on my own, or would you advise seeking the assistance of an immigration lawyer to navigate this complexity?

Thank you for your help