Basically I modeled a Funnel in Solidworks with a bigger pour in diameter and a smaller intern outflow diameter. The Funnel was designed to intersect with the Model intentionally to later combine it with the Model in Meshmixer using the Boolean Union feature.

Now the distribution of Liquid is more consistent to all outflow Holes equally.

I printed this Model in 100% and it weights 60 grams.
I did so because, you never know who is gonna drop it, when some different kinds of Liquids are involved ;)