Going back to chainrings has anyone managed to successfully fit a 46t 1x chain ring?

I tried to swamp out the 2x 50-34 set up to a 1x 46t, both set ups using Praxis chainrings but the 1x chain ring is almost touching the frame. For both set ups I used the same chainset spacers were are maxed out to make the rotor cranks mirror the chain line of GRX chain sets

From what I understand , the 1x looks to have a 3mm offset to reduce the chain line,  although this is not listed on the praxis website it seems pretty common in 1x  chainrings when I was looking into this last night.

I'll go back to 2x for the time being and start to looking for zero offset 1x chainrings as they must exist?

Could you run the 1x chainring as the outer chainring on a 2x GRX chainset and then not run the inner ring?