Until then, you can use a dose of hairball remedy right before meals. This coats the throat and helps with acid build up.
You will also want to feed the cat several small meals a day and see if it helps. Jarred baby food works well and is mild. Chicken/rice, lamb/rice, etc are all great choices. Just be sure that they do not contain onions or garlic.
Let me know if you still have questions.
