Need Help Baking From Multires

Hey I have a project I am working on and I didn’t know you can’t bake from multires if the base mesh has ngons. So now I am stuck and not sure how to proceed.


You can see when I try to bake the ngon in question just doesn’t get anything in the displacment map. And baking to a slightly higher subdivision is not doable because the map looks really warped on that level.

How can I bake this displacement map now? The information is right there I just need to put it in the texture somehow.