Bluetooth: Sonoma - It was working, now it isn't. Will turn on, then turn off?

About a month ago I updated to Sonoma and Bluetooth was working without issue. Yesterday, when I went to connect a device, Bluetooth was off. I turned it on and after a few moments it turned itself off again.

I needed to use OpenCore Patcher to get my Wifi running, so perhaps that is why? I have AirportBrcmFixup.txt, IO80211FamilyLegacy.

I'm not sure where to start. The system devices show:

Bluetooth Controller:

Address: NULL

State: Off

Chipset: BCM_4350C2

Discoverable: Off

Firmware Version: v0 c0

Supported services: 0x392039 < HFP AVRCP A2DP HID Braille LEA AACP GATT SerialPort >

Transport: UART

Vendor ID: 0x004C (Apple)

Bluetooth HCI:

Product ID: 0x0a2a

Vendor ID: 0x8087 (Intel Corporation)

Version: 0.01

Speed: Up to 12 Mb/s

Location ID: 0x14200000 / 3

Current Available (mA): 500

Extra Operating Current (mA): 0

Any help would be appreciated.