Any way to install macOS 15 on my 2009 MacBook with OCLP despite USB 1.1 removal?

Hi, I have a MacBook Unibody (2009) currently running macOS 12 Monterey with OCLP. Specs:

Intel Core 2 Duo P7550 @ 2.26 GHz

8 GB RAM 1333 MHz

256 GB SSD

NVIDIA GeForce 9400M

Since Apple dropped USB 1.1 support, my built-in keyboard and trackpad don’t work, and I also can’t use USB keyboards or mouse. That basically leaves me with only Bluetooth devices as a potential option.

I know Monterey is the realistic limit for this machine, but I’d like to know: is there any way to install macOS 15 on this hardware using OCLP if I rely on Bluetooth peripherals? Or is it simply impossible because of the age of the CPU/GPU and the USB issue?

Thanks for any insights.