How to make fluid not so much shaky

Hi,
I’m trying from 3 days, to make perfect fluid simulation in milkshake glass. Milkshake is moving with the character. Everything is almost done but fluid is reacting too shaky and it pours out from the glass.

Shaky fluid video example of how its behaving

here are my settings

And by the way do you guys know is there any simple method to make by keyframes that someone is drinking shake and it pours out a little by time, once he drink. Or i have to make it by the some force?

thank you!

Have you tried to set a low value in “Viscousity” settings?