Troubleshooting OCLP Sonoma Install Issue

I'm stuck in a loop trying to install Sonoma through OCLP on my mid 2012 macbook pro (9,2). I previously installed Monterey through OCLP and later installed Ventura through OCLP and both worked great.

The machine itself was upgraded in 2020 with 16GB RAM and a new Kingston hard drive. It had been running well before, I guess I shouldn't have tried another upgrade.

While trying to install Sonoma, the computer freezes right here for a few minutes, then reboots itself. I've restarted the process and experienced the same issue repeatedly. I'd be just as happy to abandon the update at this point and return to Ventura but that no longer seems to be an option.

I can't complete the install and I can't find my way back to Ventura. I'd really like my computer back but I'm not sure what to try next. Any advice would be hugely appreciated!! TIA