Managing veterinary costs - open cap for veterinary practice

We want to continue to be able to help animals in need - not having to look away from old or sick animals that need our help - just because the association's treasury is empty.
We (unfortunately) always have an "open lid" at the veterinary practice Tierarztpraxis Hinterland in Dautphetal and are infinitely grateful that our patients are (nevertheless) ALWAYS helped there!
However, we would like to reduce the outstanding amount in the mid 4-digit range so that we can continue to be welcome guests at our trusted veterinary practice in the future and provide animals that need our support with the necessary medical care.