Meanwhile, for the frosting: In a medium bowl, with an electric mixer, beat together the cream cheese and butter for about 20 seconds. Split the vanilla bean lengthwise and scrape the vanilla seeds into the bowl. Add 2 teaspoons of almond milk, the monkfruit sweetener, and 5 drops of stevia. Mix for about 20 seconds more until completely combined. Taste and adjust the sweetness as desired, then beat the frosting on high until it is fluffy, 1 1/2 to 2 minutes. If the frosting becomes too thick, beat in the remaining 1 teaspoon of almond milk.