GGG some distant cousins of mine ran an animal rescue facility - it nearly brought the wife to the brink of collapse. It is incredibly demanding, and NOT a hobby (I am not suggesting that you think it is)
Where I live there are a number of facilities, and they are set up and run as charities, with staff and fundraising in place.
Doing it as a personal venture is really really tough - I used to go and help my cousins (they were a lot older than me) in my vacations and what always struck me was that there was always crisis after crisis. And a lot of drama.
Maybe this is the time to start reviewing the whole process. Which bits you like, and can handle, and which bits you can't. Eventually my cousins gave it up.
Maybe talking about the whole rescue centre and where it is going might be a way in. To say you can't handle the whole operation single handle and ask GUBU for his input?