How to increase milk supply?

Has anyone had success drinking oat milk and getting an increase in supply? If so what one is the best for a whole milk drinker lol, I’m not a fan of soy or almond milk but I really want to increase my supply so I’m willing to try anything… I honestly am to the point where if I don’t see and increase I’m done lol it doesn’t seem worth it to get 6oz a day… At this point my baby is getting mostly formula anyways.