Nondescript,
You're very close to being regional bait. I'd hesitate to offer you specific advice about getting that needed 200 hours. But getting current in something and up to speed on the academic side of things (FAR's, AIM, Ops Specs, etc.) might be a first step.
Every regional has an email address where you can reach out to their recruiting/HR people. You might ask every one of them what they'd recommend for someone in your situation. You likely aren't the only person in that boat.
These days, they're sort of hurting for applicants and can't afford to blow off people who are "close" to being applicant material.
Good luck and keep the Peanut Gallery informed about how you make out.