Amsoil oil is overkill in my mind for your usage. NAPA synthetic 0W20 is all that is needed.
Unsure of the need for a UOA unless your going to push the OCI.
Fuel dilution is not great in a gas engine.
Try using a fuel cleaner every oil cycle and see if it helps
In my '22 Subaru Crosstrek, I use Redline Fuel System Cleaner every oil change and have 3000mi OCIs and do many "spirited" highway driving sessions during this time and it does not care one bit. Fuel dilution is high like other Subaru GDI vehicle owners. Maybe this works with other GDI vehicles, but not in Subarus from what I have seen.