Another beginner here, but here is a little direction. I am fairly confident that (a h-uile an latha )is a good representation for everyday. The term 'better' has more options. I think you are on the right track with a form of ‘feabhas’. I’m thinking maybe (a h-ulie an latha am feabhas) but don’t quote me.
You can send a request to the Gaelic language organization that I belong to. They should be willing to help, although it might take a while for a (volunteer) response. Google: slighe na gaidheal

(moladh an latha) praise the day!