I don't have same machine and just try to make universal EFI (just for test). Maybe is good starting point or maybe no .ACPI patching is copy and paste from Rehabman Mojave Clover guide.
I have issues with USBPorts.kext, and manage to run OC 0.6.8 on 11.2.3 only without EH01 and EH02 ( removed from USB ports ).... I use this EFI now and work stable ( BCM94352HBM work good too )
EFI-0.6.8-last.zip