Great to hear, Henny, keep us updated on beloved Finn.
Another thing to do (hard tho) when they have stomach
upset is to give a complete break from food. Digestion is
hard on the body. A 6-12 hour break DOES NOT starve
them and sometimes is all they need to recover. Followed
with bland diet for another day or two, depending whether
they are getting better. Of course, if continued vomiting,
take to Vet!