Get Ollie Better

We recently adopted an older cat, and when we took him to the vet it turned out he has some health issues that will be rather expensive to address (among them dental disease, an upper respiratory infection, and probable pancreatitis). We intend to help him as much as we can, but we need our small savings for family emergencies too. The goal of $500 I've set here is based off of the vet's initial estimate, but it will probably end up being somewhat more, as after the bloodwork came back the vet added an abdominal x-ray to the to-do list (plus the initial estimate did not include vaccinations which Ollie is also due for). If getting him sorted ends up being less, we will donate the difference to an animal charity such as Paws 4 A Cure. Thank you for your help!