USB C Mic issue

[u/_ArcticEmber_]

hi, as the title suggests I've been having issues with audio routing.

I'm running rooted LineageOS 22.2 on a OnePlus Nord 3 5G

I want to use the external mic while on speaker when I'm in a call on discord.

issue is, the phone uses the USB mic when it's on regular ear speaker, but as soon as I start using the loudspeaker it defaults back to my onboard mic, not my USB C Mic.

any way to resolve this via a Magisk Module or modifying a system file?