OSX SDK 11.1 with IND16.3 SDK

Hi,

I am building my Plugin for 16.4. On Mac I get an error like so:

Object file (/Library/SDKs/InDesign_16_SDK/build/mac/release_cocoa64/packagefolder/contents/macos/libs/libPublicPlugIn.a(templates_pubStatic_Cont.o))
was built for newer macOS version (11.1) than being linked (11.0)

It appears that I can get 11.1 SDK if I install XCode 12.4 command line tools. However, the SDK documentation for 16.3 SDK mentioned XCode 12.3.

I have a few questions:

1. Is it possible to get OSX11.1 SDK separately without installing XCode 12.4 command line tools?

2. Can I build the plugin using XCode 12.4 instead of the documented XCode 12.3?

3. Can I just upgrade XCode command line tools to 12.4 and retain XCode 12.3 as documented?

Thanks,